Why is the wifi adapter not working? Why Wi-Fi does not work on a laptop

Useful Tips

If WIFI stopped working for you, do not rush to turn to paid services of specialists or call masters at home. To help you, we have collected all the useful tips and provide the most common problems and ways to fix them.

So, first of all, you need to make sure that there is no Internet precisely through a wireless Wi-Fi connection. Plug the ISP cable directly into the network card. The Internet did not appear even in this case? Call the provider's support service. The problem is not in wi-fi, but in the absence of the Internet for technical reasons. Make sure your internet bills are paid on time.

What to do if the internet is working but wi-fi is not working?

Try connecting to the access point from other devices. So, if WIFI does not work on a laptop, but at the same time you managed to connect to the same network from a smartphone or tablet, then the problem is in the laptop.
Perform a visual inspection of the router and all cables connected to it. The RJ-45 connector or plug may be damaged, the antenna contact may come off. Try turning it the other way. Very often the router breaks down after a severe thunderstorm (unless you turned off the router in time and pulled the provider's wire out of it). Problems can be easily identified by the number of blinking lights. Get out the instruction manual and find out which light bulb is responsible for what.

If no visual damage is found, the reason is in the settings. In this material, we will not provide full settings. You will find them in the instructions and in the service contract with your provider. Consider only the subtleties that many are missing.

How to set up a router correctly

First of all, use the setup instructions provided by your ISP. Many users ask why there is no wi-fi, but the reason may be simple - the provider, in order to upgrade, may change some settings and not notify you about it. Therefore, it will not be superfluous to call the support service and clarify the network parameters.

Go to the settings menu by entering the address indicated on the router case in the search box. What to look for here?

Make sure the DHCP server is enabled. Otherwise, the router will not be assigned an IP address. To do this, go to the DHCP settings and make sure that the value is set to "Running" or "Enable" (if you have an English-language menu).

The data transfer channel on the router is set in automatic mode, but sometimes it is better to choose it yourself. What is the threat of an incorrectly selected communication channel? Signal overlays. To check the congestion of channels, use the Free Wi-Fi Scanner applications (for Windows devices) or Wi-Fi Analyzer (for Androids). By setting Wi Fi channels to "Auto" mode, you enable the equipment to independently select and assign the optimal channel.

Channel width is a parameter that determines the maximum data transfer rate over a certain period of time. For 2.4 GHz routers, the value is set to 20 MHz, for 5 GHz routers - both 20 and 40 MHz. Setting the width to 40 MHz in a 2.4 GHz router is highly discouraged. How do I switch my router to 5 GHz? Operation at a frequency of 2.4 GHz occurs using the b g n protocols. N supports high throughput. But b, g are compatible with devices more than 5 years old. Therefore, for a 2.4 GHz router, it is better to enable mixed bgn mode. 5 GHz routers operate in 802.11a / g mode (but the Wi-Fi modules on the devices must also support it).

Filtering by MAC protects perfectly, but can become a serious obstacle in connection. The function prohibits access to the router for specific devices. Or vice versa, you can specify a list of MAC addresses in the settings - gadgets that are not included in the list will not get access. We do not recommend experimenting with MAC addresses unnecessarily. Quite often, subsequently, because of this, many users do not connect wi-fi and they cannot fix the problem on their own.

What to do if Wi Fi disappears after installing Windows 10? The problem is solved by installing new drivers. They must be designed for a specific router model and under Windows 10 OS. Note that not all manufacturers at the time of this writing have released drivers that support Windows 10. You can try to install drivers for Windows 8 or contact the contact center of the company that released your hardware.

Why does wi-fi not work on a tablet and phone, but on a computer?

If you do not have Wi-Fi on an iOS or Android device, it will be useful for you to know the following information. In many cases, the problem is, again, in the wrong settings, although it is possible that the device is “buggy”. You can read about what to do if there is no Internet on a specific device running Android in this one.

Before you start changing the settings, make a "backup" so that the result does not turn out "worse than it was".

At the first stage, delete the wi-fi settings from the device, which you are having difficulty connecting. Otherwise, even if you change the settings of the router, the smartphone or phone will try to connect to the network with outdated settings.

So, what we pay attention to:

The quality of the SSID network name. SSID is the name of the network and this is what you see when you find your network in the list of networks available for connection. It must be unique. Do not use your router model name or common names. If the SSID is not unique and there is already an identical name, the devices will have difficulty authenticating.
You do not find your network in the list of available for connection and are wondering how to connect to WIFI. It may not appear if the signal is weak or there is a hardware problem. But also the tablet and phone will not be able to detect the network if you use a closed (hidden) SSID. How to determine if hidden SSIDs are being used? Make sure there is a check mark next to Broadcast SSID.

If Wifi does not work on your phone, you should also check the encryption settings. As a rule, manufacturers recommend setting AES - Personal WPA2 encryption. But some devices only connect via TKIP. Therefore, you should try different types of encryption. Also, don't forget the password.

This completes the description of the most common reasons why there is no Wi-Fi. We hope that this material was useful to you and you solved your problem.

These days, computer forums are full of messages from upset users that many do not have wifi working on their laptop. Some users simply abandon the wireless Internet, depriving themselves of a powerful tool for work, business and leisure. Therefore, it is obvious: the problem is urgent and should be considered.

1. Lack of Wifi due to individual settings

Most laptop models are equipped with a dedicated wireless switch, which is usually located outside the main keyboard. This button can be located in the most unexpected place, but most often next to the power button, or not far from the keyboard (for example, at the top right).

If you find it difficult to find this switch, take a look at the instructions from the laptop, where in one of the first sections there is a description of each button. Very often, for novice users, the network does not work for this simple reason.

After moving the network switch to the active position, a light opposite the network icon (usually an antenna) should light up on the display panel of the laptop, and a network icon will appear in the system tray (near the clock and date), on which you can click and get into the wifi settings menu. If there is a problem with the network, you should find out if the settings are correct.

On some models, turning on the adapter alone is not enough. A special utility is required to ensure its operation in a laptop.

Carefully study the disks that come with your laptop - it is on them that you can find this utility.

2. Weak signal

What should you do if you are convinced that the entered settings are correct, but wifi on the laptop still does not work? The answer may lie in a weak signal level, bordering on its almost complete absence. Many devices will simply refuse to connect even if they can detect the network.

A problem with the network on a laptop may arise due to a far-installed router, or the presence of obstacles in the path of the signal from it (thick walls, metal structures, sources of radio interference, etc.). Try moving your laptop closer to your router and reconnecting to the network. If the problem goes away, consider changing the location of your router.

3. The problem with the drivers

Another reason may be the "flown" wifi module drivers in the laptop. It is recommended to reinstall them in order to immediately remove suspicions from them when troubleshooting. On the official websites of manufacturers there are drivers for each laptop model, and they are available free of charge. Download them only from there, taking "firewood" from third-party resources can be dangerous.

4. Malicious programs

Some viruses, after infecting a laptop, begin to "attack" the system files that are responsible for network operation. If earlier there were no problems with it, but now it does not work, it is very likely that wifi does not work on your laptop for this very reason. Conduct a "revision" of the system for viruses, and, if detected, correctly remove them from the computer. This can be done using the same DoctorWeb Cureit utility.

After completing all operations, restart the laptop and set up wi-fi again.

5. Malfunction of the wifi module

The Wifi module is responsible for the ability to connect the laptop to the network. If the wireless connection does not turn on, the reason may be a hardware malfunction (roughly speaking, the module is out of order and no longer works). Write your laptop a "ticket" to the service center, where it will be tested and the exact cause of the malfunction will be found.

Trying to open the computer yourself and get to the module is extremely dangerous - you can seriously damage other parts in the laptop without much effort. Then the repair is definitely inevitable, and it will cost several times more.

If you have an old laptop model, replacing the module can be quite difficult due to the banal lack of spare parts on the market. Your salvation can be an external wifi module that works through a regular USB connector. This is usually cheaper and less time consuming.

6. Malfunction of the network itself

Sometimes the problem is not with the laptop. The network on it does not turn on or does not work due to a malfunction of the entire network. Check if it is possible to connect other devices to it. And, if not, then the problem is in the network. First, reboot the router. Did not help? Then try setting it up again.

If you have any problems with self-configuring the router, contact your provider for help, because often Internet providers use specific settings for the operation of their subscribers' devices.

If for some reason the wifi network on the laptop does not turn on or does not work, do not despair. Most often, the problem can be solved very quickly and fairly easily.

Wi-Fi not working on a laptop? Then you've come to the right place.

There are quite a few reasons when a laptop cannot connect to a Wi-Fi network. This article will provide an algorithm for solving this problem, taking into account the frequency of possible causes.

In case of an unsuccessful connection to the wireless network, the problem may not be in the client device (laptop, netbook, ultrabook, etc.), but in the settings of the router.

To do this, you must try to connect to the wireless network using any other device equipped with a Wi-Fi module - another laptop, netbook, tablet, smartphone, etc.

If you were able to connect to a wireless network, the problem is with your computer. If the connection fails, the problem is with the router. Next, we'll take a closer look at the solution to each of these problems and start with the case where the connection issue occurred with the laptop.

Back to menu

So, based on the diagnostics that we carried out in the previous step, it was established that the connection problem occurred on one of the client devices of the wireless network.

Next, we need to figure out what state (on / off) the laptop's wireless adapter is. As a rule, all laptops are equipped with light indicators for the operation of the wireless module and have a specific key combination to turn it on.

Note! A lit indicator indicates that the adapter is on. The lack of backlight signals that the Wi-Fi adapter is turned off.

Most manufacturers have indicator lights on the front or one of the side panels of the computer. Less common is the location of indicators near the touchpad or on the monitor case.

On some HP models, the Wi-Fi status light may be built into the power button on the keyboard.

To turn on the Wi-Fi module, a key combination is used, which consists of a special Fn key and one of the system keys from F1 to F12. Look carefully at the system (function) keys and find the Wi-Fi connection icon on one of them.

On some older models, in particular from Acer, you can find a solution for turning on the Wi-Fi module in the form of a two-position switch.

Such a switch, as a rule, is located on one of the sides of the laptop or on its front side. Below is a list of keys that can be used to enable / disable the Wi-Fi module on the most popular brands of laptops.

Acer: Fn + F3

Fujitsu: Fn + F5

Gigabyte: Fn + F2

After turning on the adapter hardware, connect to the wireless network. If the connection failed, go to the next step.

Back to menu

In addition to the hardware enablement of the wireless adapter, which we dealt with in the previous paragraph, there is also software enablement, which is performed directly in the operating system installed on the laptop.

To enable the wireless adapter in windows 7, you must perform the following steps: on the notification panel (near the clock), select the Internet connection status icon "Network and Sharing Center".

In the left column, select "Change adapter parameters".

In the list of connections, you should pay attention to the indication of the item "Wireless network connection". In the case of a disconnected adapter, it will not be highlighted. To enable, click on the icon with the right mouse button, select enable.

The color of the icon should change.

Now you need to pay attention to the area of the notification panel. In the first case, the laptop's Wi-Fi adapter is turned on, but there is no network to which you can connect (as a rule, this is a router problem). In the second option, the adapter is turned on and you need to find your network in the list of connections and make a connection.

After turning on the adapter programmatically, we try to connect to the wireless network. If the connection failed, go to the next step.

Back to menu

To check for the installed driver, you need to right-click on the "My Computer" shortcut, which can be found either in the "Start" menu or on the Desktop, in the context menu, select "Properties", in the left column of the window that opens, select the "Manager devices ".

In the window that opens, you need to find the "Network adapters" menu and find the name of the wireless adapter, which contains part of the name "... Wireless Network Adapter" or "Wireless Network Adapter ...", where instead of "..." there should be the name of your wireless adapter, for example, Atheros , Realtek, Qualcomm.

In our case, this is the Atheros Wireless Network Adapter. Click on it with the right mouse button, select "Properties". In the menu that opens, you need to make sure that "The device is working properly."

Important! If you cannot find the name of your wireless adapter in the Network Adapters menu, you need to install the drivers. Drivers can be found on the disk that came with the laptop, or by using an Internet search. Return to the menu

In the first step of our article, we looked at how to determine with a high degree of probability the possible reason why a Wi-Fi connection cannot be established.

Since there are quite a lot of routers, and there are even more firmwares for them, general recommendations for fixing the problem will be given in this paragraph.

1. Try to shorten the distance between your laptop and router. Try to have a line of sight between the devices and as little interference as possible (walls, partitions, ceilings, microwave ovens, radiotelephone bases, etc.).

2. Make sure the wireless indicator on the router is on.

3. Go to the router settings and make sure that:

Wi-Fi module activated;

SSID broadcast mode is activated;

The MAC address of the laptop that cannot connect is not blacklisted.

On this, the list of possible reasons due to which it is impossible to connect a laptop to a Wi-Fi network is almost exhausted. There are always some nuances that can be discussed in the comments.

Why isn't Wi-Fi working on my laptop? You can find out by running system diagnostics. You will learn how to do this in the video presented.

geek-nose.com

Why Wi-Fi may not work on a laptop and how to fix it

Wi-Fi technology is very widely used in the life of a modern person, since it allows you to easily and quickly solve the problem of connecting to the Internet without using ordinary wires. This is especially true in the case of using laptops, with which you can access the Internet in any convenient place thanks to the built-in Wi-Fi adapter.

That is why the situation when Wi Fi does not work on a laptop leads to significant inconveniences and even some problems. There are many reasons why Wi-Fi may not work on a laptop. It is simply unrealistic to solve the most serious of them on your own without the help of specialists, but there are quite a few that can be easily eliminated on your own. Let's consider them.

Is there a problem with your laptop or router?

A fairly common problem that a laptop has stopped connecting to a WiFi network is not a problem with the laptop itself, but with the settings of the router, which distributes the network. Thus, the laptop can be configured correctly, but Wi-Fi still does not turn on precisely because it has nothing to connect to.

To exclude the possibility that the problem is related to this, you should try to connect to the network from any other device that is equipped with a Wi-Fi adapter - from another laptop, smartphone, tablet, and the like.

If Wi-Fi does not work from another gadget, then the problem lies in the Wi-Fi router that distributes the Internet. If the connection is successful, the problem is in the laptop and before solving it, you first need to determine why Wi-Fi stopped working.

Hardware enable adapter

Based on such a diagnosis, you can accurately determine that this problem arose precisely through the fault of the laptop. When Wi-Fi does not work on it, you can try using several methods.

The first one is to check if the wireless adapter on the laptop is enabled. Almost all modern models have LED indicators for the WiFi module and there are special key combinations for its hardware activation.

A normally lit indicator indicates that the module is turned on. If the indicator does not glow at all or shines red, then the wi-fi is not working precisely because of the wireless network adapter. It must be turned on.

Most often, such indicators are located directly on the keyboard, side or front panel of the device case. Sometimes they are located on the monitor case or near the touchpad.

To enable the module of such a network, press the Fn key combination and one of the system F1-F12 keys. The exact combination depends on the laptop manufacturer. Usually, the corresponding antenna icon is located on the desired key. If it is not there, then to turn on the Wi-Fi, you should try to press the standard combination for a particular model: Fn + F3 for Acer; Fn + F2 for Asus, Dell or Gigabyte; Fn + F5 on Fujitsu devices;

Fn + F12 on HP laptops.

After pressing the corresponding keys, we check if the indicator of the wireless module's operation is on or if it has stopped glowing red. After that, you should try again to connect to the network. If that doesn't help, go to the next step.

Software inclusion

When the wifi has stopped working and its hardware activation does not give positive results, it is also necessary to turn it on in software, which is carried out directly from the operating system under which the laptop is running.

To programmatically enable WiFi, which has stopped working, on windows 7, 8 or 10, you need to perform the following sequence of actions:

1. On the notification panel, which is located near the clock, the icon for the status of network connections is selected;

2. From the list that opens, select the item "Network and Sharing Center" or "Network settings" depending on the version of the operating system;

3. The next step is "Changing adapter parameters".

Among the list of all existing connections, you should pay attention to the color of the "Wireless network connection" icon. If your WiFi is not working and the wireless adapter is disabled, the connection icon will not be highlighted. In this case, right-click on its icon, select the "Enable" item from the context menu that opens. In this case, the color of the connection icon should change.

In this case, the wireless network adapter turns on, it remains to find the desired wireless network in the list of available wireless networks and connect to it.

If, after such actions, Wi-Fi, which stopped working, continues to be inactive, you need to move on to the next method for solving the problem.

Installing and Updating the Driver

Quite often, the Wi-Fi wireless connection does not turn on due to the lack of a driver or in the case when it is very outdated. To determine if the driver is installed, you need to select Properties from the context menu of the My Computer icon located on the desktop or in the Start menu. Next, in the window that opens, from the menu on the left, select the "Device Manager" command.

In the new window that opens with a list of connected devices, you need to find the name of the laptop's wireless network adapter. Usually its name is "Wireless Network Adapter" or "Wireless Network Adapter", along with which the manufacturer of the device must be listed: Realtek, Atheros, Qualcomm or something else.

After finding the desired item and clicking on it with the right mouse button, select "Properties" from the context menu. In the window that will open at the same time, the item "Devices is working normally" should be present. But even if there is a mark about the normal operation of the device, this is far from a guarantee that the correct version of the driver is installed and Wi-Fi is turned on correctly. To check it, in the window with the properties of the wireless device, go to the "Driver" tab and pay attention to the "Development date" and "Supplier" items.

In the event that the supplier is Microsoft or the development date of the program is several years behind the current one, go to the official website of the laptop manufacturer and download the latest official version of the driver.

The same should be done if there is no wireless adapter among the list of installed devices.

If the wireless module is present in the list of devices, but it is marked with a yellow exclamation mark, this means that the device is disabled, as a result of which the network stopped working. In this case, after opening the device properties window, you need to click the "Activate" button.

Another reason why Wi-Fi stopped working on a laptop may be that the power saving mode is activated, which prevents the wireless connection from working. To disable it, you need to do the following: 1. Open the Control Panel;

2. Select the "Power supply" icon;

3. In the window that opens, select the "High performance" or "Balanced" mode.

External signal barriers

It's also worth noting that a broken wireless network can also be the result of more than just laptop problems. The signal of a wireless connection is affected by some external factors, which can weaken it. Ceiling, walls, floor, and similar obstructions significantly degrade the signal quality of the access point and laptop.

As you know, the signal quality on a personal computer is displayed in the form of several marks - the more there are, the better the signal is. If the wireless connection level is displayed as 1 or 2 marks, then you do not need to try to use WiFi - in this case, it will not work normally.

In this case, you need to move the router closer to your workplace, move the workplace closer to the Wi-Fi router, or buy a new, more powerful router.

If all else fails

If none of the tips above helped, you can use a simple yet often effective solution: restart both your computer and your wireless router. Please note that after a reboot, the router turns on for up to 5-10 minutes before it starts distributing the network. Be patient. Also, despite the opinion of many skeptics, sometimes the troubleshooting function of the windows operating system helps to solve problems with a wireless network.

Thus, most of the existing solutions to the problems associated with the fact that Wi-Fi stopped working on a laptop were listed above. Almost all of these methods and recommendations can be used by anyone who has encountered a similar problem, since this does not require any special skills. If all else fails, and the wireless network does not start working, there is only one way out - to go for help to a high-quality service center, where they can solve any problems with the laptop.

If the article did not help to solve your problem and Wi-Fi still does not work, write in the comments, I will try to help.

computernotes.ru

Wi-Fi does not work on the laptop. How to restore the connection

Connecting a laptop to a wireless, wi-fi, network does not always go smoothly. If you have problems, see step-by-step instructions to help you troubleshoot. We recommend not to ignore this or that action, but to perform everything sequentially, as in the article.

Diagnosing the source of the problem

If your device, a laptop, has failed to connect to a Wi-Fi network, the problem may be hidden in the wrong settings of the router. The first step is to find the source of the malfunction that leads to the connection error. It is on this that further "treatment" depends.

To determine the source, connect your iPad, smartphone, computer (any other device) to the Wi-Fi network. If the connection on any of the devices is successful, the conclusions are obvious - the problem lies in the laptop. And if you did not learn how to connect via a wireless network, as in the first option, then the router is not configured properly. We will consider both the one and the other case separately. So what if your laptop is the problem?

Hardware enable Wi-Fi of the laptop module

The diagnostics carried out earlier (see step one) revealed the following: if it was possible to connect, for example, a tablet or smartphone to a wireless network, then everything is in order with Wi-Fi, and the problem lies in the laptop.

To solve it, the first step is to check the status of the wireless adapter of the "problem" device.

It can be disabled, respectively, and the Wi-Fi network does not work on this device. The adapter is connected with a certain set of buttons and shows the operation with the help of a light indicator. It is important! If the light is on, the wireless module is enabled on the device. And if the light is off, the wi-fi adapter is disabled.
The indicator light is traditionally located on the front or side of the laptop. But there are some models of laptop computers that differ in the location of the indicator. For example, it can be located on a monitor (its body) or a touch panel. And there is a third group of laptops. They have a light indicator that shows whether the wireless network module is working or not working, located on the power button (that is, built-in). A specific keyboard shortcut is required to connect the wireless LAN module. Any combination begins with the Fn modifier key, to which one of the functional ones is added - F1-F12. If you take a close look at the function keys, you will see a wireless, wi-fi, network icon. Laptops from the manufacturer Acer differ from more modern models in that they include a wireless network module using a special two-position switch. If you have a laptop from this brand, you will most likely find this switch on the side. In the screenshots below, we showed how the Wi-Fi adapter turns on or off on laptops from different manufacturers.

Asus: Fn + F3Dell: Fn + F2
Fujitsu: Fn + F5Gigabyte: Fn + F2
HP: Fn + F12 If the wireless module is working, connect via wifi network. Do you still have problems? So, follow the third step.

Software enable Wi-Fi of the laptop module

The second step we tried to fix the problem was to enable the wireless adapter in hardware. Now we will try to do this programmatically. This means that our next steps will be performed in the OS itself, the software that is installed on our laptop.

If your operating system is windows 7, follow these steps:

Step one To enable the Wi-Fi module, go to the "Network and Sharing Center" section (where the time is shown).

Action two On the left, click on "Change the parameters of the network module."

Step Three Here you will see a list of connections. When connected via a wireless network, the indicator should be on, if not, the module is disabled. Click on it and turn it on.

If the icon lights up, the wi-fi adapter is on. Step four: Go to the taskbar (where the clock and other icons are). As you remember, in the second step, the problem was that the wireless module worked fine, but there was no network to connect, which means that the router was not configured correctly. The picture shows 2 connection states in the task area of the desktop: the first - there are no available networks and the second is. In the third step, you have enabled the wifi adapter, now you need to find your network and just connect.

The module was successfully enabled programmatically, now try connecting to a Wi-Fi network. Is the problem still there? Follow the next, fourth, step.

Installing / reinstalling drivers for Wi-Fi module

Now you need to check if the driver is in the system. In "My Computer" click on "Properties" and from there go to "Device Manager".

A menu window will open. This is where you need the "Network Modules". You need to find the name of your wireless module. In this name you will come across the word Adapter (if the operating system on the laptop is in English) or "Wireless network adapter" (if it is in Russian). For example, the name of the module would be: Qualcomm Wireless Network Adapter. Click on the name of the adapter and in "Properties" see how the device works. It should work fine. Important information! If in "Network adapters" you did not find the name of the wireless module installed on the laptop, then there are no drivers. Download them from disk or find them on the manufacturer's official page.

Fixing connection problems in the router

In the first step, if you remember, we recommended that you, if possible, find the exact reason why the wireless network does not connect on the laptop. Depending on this, we proposed methods to eliminate the problem. What to do if the problems lie precisely in the settings of the router? We cannot consider each individual case, since there are a sufficient number of routers and installed software (firmware) on them. Therefore, we will limit ourselves to only general tips that will help you, we hope, solve the problem with connecting a wireless, Wi-Fi, network.

Place the router next to your computer.
Check if the wireless adapter is turned on (if there is a light on the indicator).

Check the following in your router settings:

Is the wireless module turned on;
Whether the broadcast channel is included in the Service Set Identifier;
Check if your laptop's unique identifier (its MAC address) is blacklisted.

Here's a list of problems that prevent us from connecting to a wireless network normally. For each case, we have written a detailed guide, the observance of which should solve the problem with the connection. If something did not work out for you, believe carefully whether you correctly identified the cause of the malfunction and followed the sequence of actions.

After completing the diagnostics of the operating system described in this article, you should solve the problem of connecting the Wi-Fi on the laptop.

What OS do you have?

pc-helpp.com

What to do if Wi-Fi (WiFi) does not work on a laptop running windows 7

Recently I faced such a situation when, all of a sudden, for no apparent reason, the WiFi connection on a laptop began to disappear from relatives. The situation is like in a detective film. During the day, the Internet works with a bang, and in the evening the laptop simply refuses to search for networks and, accordingly, the connection disappears. I must say right away that the operating system windows 7 (x86) SP1 was installed on the laptop.

I could not understand the pattern in any way. The laptop was plugged into an outlet and everything worked great with me. But if not the case, I would not have been able to find out what is the reason to this day.

While in the room, I had to move my laptop to the kitchen and suddenly problems started. It was enough for me to disconnect the laptop from the power supply, and the Internet almost immediately disappeared. Hmm, a pattern was found, if there is no power from the network, then there is no WiFi, this is already a clue. Suddenly it dawned on me that in the power supply section there are different power consumption profiles, and in different modes, this or that piece of iron turns off. Thought, thought, but it is necessary to test the theory.

I climb into the start-up - control panel - power supply section (if you cannot find it, then on the top right there is a type of display of sections, which must be changed from the "category" parameter to "large icons". The power supply button will be at the very bottom)

In the power supply section, click on the "power plan settings" button (select the mode that is currently active for you).

In the window that opens, look for the section "Wireless network adapter parameters" - "power saving mode"

In my case, it was in the "battery" item that "maximum energy saving" was set. This is where the dog is buried. When the power switches to the battery, the laptop immediately cuts off the wireless Wi-Fi connection, as a result, the Internet is turned off.

In general, I set both parameters to maximum performance, clicked on OK. And literally in a couple of minutes, the Internet started working normally, both from the battery and from the network. Problem solved !!!

As a result, I can say that when a problem arises with a laptop or computer, it is imperative to turn on Sherlock Holmes and get to the bottom of the problem logically. It turned out that Wi Fi Internet does not work, precisely because of the power supply mode. Who would have thought. They wrote a bunch of all sorts of things on the Internet, but not a single site gave an intelligible answer. But in the end, logic prevailed!

knopkastarta.ru

Wi-Fi not working on a laptop: the most common problems and their solutions

If you bought a laptop, you probably expected that you would use it to access the Internet. However, if wifi does not work on your laptop, then you will not be able to connect to the network wirelessly. Therefore, when such a problem occurs, it is better to know in advance how to behave in order to quickly troubleshoot.

Router check

Before you begin to figure out why Wai Fai does not work, you need to determine the source of the problem. Try connecting to a wireless network through any other device - smartphone, tablet, game console. If a connection is established on another device, then it is the laptop that has stopped working correctly.

If no device is connected to the wireless network, then the cause of the problem should be looked for in the router. To get started, try closing the distance and removing any obstructions between your router and laptop. Check that the wireless indicator on the router is on. If the light is off, check your Wi-Fi settings:

What should I do if the above steps did not help and the wireless connection still cannot be established or is running slowly? Call the provider to clarify if there are any problems on their part. If the operator reports that everything is fine, reset the router settings to the factory settings, and then re-establish the connection after updating the router's firmware.

Laptop problems

If you are convinced that the router is working properly, but there are no available connections on the laptop, then you should check if the wifi module is enabled on the laptop. If the module is on, the indicator on the front of the laptop should be on. If it doesn't work, try turning on the Wi-Fi module manually using function keys - for example, Fn + F2. The keyboard shortcut is different on different models; some models have a hardware wifi button. Carefully examine the laptop case and find the button with the image of the Wi-Fi signal - click on it to turn on the adapter.

If the Fn button does not work, then you can turn on the module using the switch that is in the wireless connection settings. On windows 10, you will need the "Network and Internet" section, which has a "Wi-Fi" tab.

If windows 7 is installed on the laptop, then this method will not work. In this case, you will have to use an external keyboard with the Fn button (or the windows on-screen keyboard).

Internet settings are reset after reinstalling windows. If problems arose after the installation of the system, then you definitely need to check the parameters of the adapter. In addition to the hardware activation of the module, it is necessary to activate it in the system. On all versions of windows, software activation is carried out according to the same scheme:

If there is no wireless connection or it does not turn on, then you need to check if the Wi-FI module driver is installed correctly. If the driver is not installed or does not work well, you will not be able to connect to the wireless network.

Checking the Wi-Fi driver

On all laptops, be it Lenovo, HP or any other brand, the Wi-Fi module should be displayed in the device manager, even if the driver is not installed correctly on it. To check the driver of the wireless module, you need to open the "Device Manager":

Right-click on the "Computer" icon.
Open the Manage tool.
Select "Device Manager" on the left.

In the manager window, you need to open the "Network adapters" section and find the Wi-Fi adapter. There should be no warning signs next to it. The properties should indicate that the device is working properly. If everything is installed correctly, but the Internet does not work, you need to try updating the driver.

To avoid compatibility issues, you need to know your laptop model. Armed with this information, go to the manufacturer's website and in the "Drivers" section download the Wi-Fi adapter software.

Reasons why WiFi does not work

Before blaming the laptop, you should check the access point itself, since it is the router that can be the reason for the inoperability of the wireless network.

First of all, you need to make sure that it is turned on and other devices, for example, a smartphone, tablet or other laptop, can connect to it. If everything is fine with the router, then move on.

Why WiFi Doesn't Work: Video

Checking and Installing the Network Adapter Driver

In the case when the router is turned on, the network works, but WiFi still does not turn on on the laptop, you need to check the driver for the wireless adapter and network card. This can be done in the device manager. You can open it as follows. We find the shortcut "My Computer" (on the desktop, in the "Start" menu, or in the file manager) and click on it with the right mouse button. We select "Properties". Next, in the left pane you need to find "Device Manager" and open it.

In the menu that appears, all the devices on the laptop are displayed, even if the driver is not installed on them. In this case, they will be marked with an exclamation mark. We are interested in the "Network adapters" section. Open it with a double click and see if there is a device with an exclamation mark.

If there is one, then click on it with the right mouse button and select "Delete". We confirm the action. After that, if you have a driver disc, insert it into the drive and install the necessary software. If there is no such disk, then you will need to go to the official website of the laptop manufacturer and download the necessary software for your model.

It is possible that the driver for the network equipment was previously installed, but at some point it stopped working. Why could this happen? The most common cause is a virus attack. It can also be the result of improperly turning off the device, for example, by long pressing the power button. Sometimes such consequences occur after freezes or hardware errors.

After installing the drivers, we again check the ability to connect to the wireless network. It should be noted that the above steps are performed regardless of the operating system version.

Reinstalling WiFi Driver on Windows: Video

Drivers for the keyboard

The network module drivers are ok, but the wifi adapter does not turn on, what should I do? Here you need to understand what is done with the keyboard. As a rule, this is the Fn key combination + the WiFi enable button (marked with the corresponding icon). If the adapter does not turn on when you press these keys, then you should install the driver on the keyboard.

There are cases when the driver is installed, most of the additional keys work, but you still can't turn on the wireless adapter. In this case, it is recommended to install a special utility to control the WiFi module. You can download it from the same source as the software.

Checking Wireless Status

If everything is in order with the drivers, but WiFi still does not work, then you should check the status of the network connection. To do this, open the network and shared access control panel by clicking on the network icon in the tray with the right mouse button, and enter the "Change adapter settings" item. Here we find the shortcut to the wireless network (depending on the version of Windows, the name may differ).

If the label is gray, it means that the connection is disconnected. You can enable it by right-clicking on the connection and selecting "Enable". The computer will then automatically search for available networks.

Alternatively, you can click Diagnostics. Thus, the system will automatically start troubleshooting and fixing the network adapters. It should be noted that this procedure can be performed several times in a row, as it can help from the second or even third time.

What to do if Wi-Fi does not work on a laptop: Video

A few more reasons why the WiFi adapter may not work

The above are the main reasons why the wireless adapter may fail. Now you know what to do first if WiFi is not working on your laptop. However, it is worth noting that all these are software reasons, which can be eliminated by simply installing new drivers, utilities, as well as performing certain operations in Windows.

Hardware errors are sometimes encountered. What does this mean. Hardware glitches happen directly to the board itself. In other words, it is physical damage to the network card. To fix such problems, you will have to disassemble the laptop. It is worth noting that some models are very easy to disassemble, however, there are also those that are quite difficult to disassemble on their own. It should be warned that it is not recommended to disassemble the laptop without certain knowledge in this area.

But still, in this article we will look at what physical damage can be. For example, if the device was being repaired or you disassembled it yourself to clean the cooling system, it is possible that the antenna wires are not connected to the WiFi adapter. You can simply forget about them corny. In this case, the adapter works, but does not pick up the signal, even when it is close to the source. The problem is eliminated by simply connecting the antenna.

Also, the answer to the question why the wi-fi module does not work is the banal overheating of the card and its failure. This can happen when the laptop is used in bed or on soft surfaces. The fact is that on the bottom cover of the device there are special holes through which cold air enters the system, cooling the boards.

It is not hard to guess what will happen if these holes are blocked for a long time. Another reason for overheating can be commonplace dust, which is drawn in by the fan and settles inside the laptop on absolutely all modules and elements of the laptop. For this reason, it is recommended to clean the device from dust at least once a year. Such cleaning will cost several times cheaper than repair.

If the WiFi adapter burns out, it cannot be repaired. It only remains to replace it. You can check this in the device manager, since when burned, this or that element is no longer displayed. In addition, if the module is displayed, but does not work, here you can see an error due to which it does not work. This, in turn, will allow you to find a solution to the problem.

Above, we have analyzed the most common reasons why the Wi-Fi adapter does not work. They can be solved on their own, without the help of specialists. However, if, after trying all these methods, you still cannot eliminate the cause of the problem, then it is recommended to contact the service center.

The router is not distributing wifi: Video

Finding out who is to blame

If the computer was able to connect to a wifi wireless network, but there is no Internet connection, then you should find out who is to blame and why.

To do this, the first step is to check the provider's cable itself. You need to try to connect it directly to the computer and configure the device. If you have Internet access, you should check your router.

As a rule, if the router works correctly with a wired connection, then it can be assumed that it is correctly configured. The only moment is to check whether its configuration has the ability to enable and disable the Wi-Fi wireless network. Maybe this setting is turned off and is affecting network performance.

If all the previous steps have been checked and no errors were found, it is worth making sure that the connected device to the Wi-Fi is not faulty. The fastest way to check is to try to connect to wifi with another laptop or smartphone. If such equipment is not at hand, then an algorithm will be described below that allows you to check the settings of the computer itself.

Causes of a wi-fi network malfunction

If access to the global network does not work, but at the same time a laptop or smartphone is connected to Wi-Fi, the reason for this may be three different errors. As a rule, two of them arise through the fault of the user himself. The third reason for the error is related precisely to the popularity of wireless routers.

So, below is a list of reasons that can cause malfunctions when wifi does not work correctly:

Prescribed static IP address in the Wi-Fi adapter settings.
An error related to the transmission channel of the wireless network.
Invalid DNS.

All of them are easily removable and do not require doing something specific. The main condition is only for the user to remain calm and have everything they need at hand (router, computer, cable).

Static IP address in the wireless adapter settings or incorrect DNS

This malfunction can be determined during the check described above, when only the computer connected to wifi does not work. As a rule, it is associated with a manually registered IP address in the settings of the wireless adapter. The error occurs due to the fact that the registered address is in a different subnet or conflicts with the same, but assigned to another device. Why is this happening? This is due to the fact that by default the router distributes IP addresses and DNS information automatically, and because of this, it may happen that two addresses are already on the home network.

If the user enters all this information manually, in principle, this will not be considered an error, the main criterion in this is the observance of the correctness of all data (free IP, correct DNS).

Sometimes also the reason when wifi is not working can be wrong DNS. The user changes this information to block a certain category of sites (Yandex.DNS - parental control), increase the speed, etc.

To check the network settings of a computer or laptop, go to the notification panel and click on the wifi network status icon. As a rule, when there is no Internet, it shows the signal strength, but with a yellow triangle with an exclamation mark.

Click on it with the right mouse button and select the item "Network and Sharing Center" in the list that appears.

In the menu that appears on the left side, we are looking for the item to change the adapter parameters and click on it.

Next, the user will see all connections on his device. There will be both wired and non-wired connections. To continue, you need to hover the mouse cursor over the wireless connection and press the right mouse button. Then, in the list that appears, select the "Properties" section.

A window should open, where a list will be visible in the center, in which you need to find an item describing the Internet protocol version 4. Select it by one click with the left mouse button (the item should be highlighted in blue). Then we press the button "Properties", which has become active.

After that, the user will see a window where all the settings of the network adapter are stored. Here, you can change the IP address with the rest of the information (netmask and gateway), as well as information about DNS servers.

If there are some numbers here, then try checking the boxes on the automatic receipt of all the necessary information. Next, click the "OK" or "Apply" button.

Then restart your laptop or computer and try to connect to the wifi network. If DHCP is enabled in the router settings, the device will receive the correct address and will work on the Internet.

Wireless link error

What if the Internet does not work, but there is Wi-Fi and it connects successfully? In this case, all settings are checked both on the computer and on the device itself, which distributes the wireless network.

This is the question many users ask. Moreover, the more the popularity of the router, the more relevant this issue is. This is due precisely to the work of wifi via communication channels. In a standard router, there can be 12 such channels of which you can choose one. By default, the router has this setting in the "Auto" mode. This means that the device is looking for the optimal channel and is working with it. But there are cases when the router of the user and his neighbor work in the same mode, which is the reason for many problems with the wireless network.

To change this setting in the router, you need to go to the device's web interface. Further, all the steps in the article are shown for a TP-Link router model. All steps are not much different from other manufacturers (just a different menu and interface) and can be applied to them.

To get to the router settings menu, you need to open any browser and enter the device's IP address in the address bar. You can find out this information from the manual of the device or the sticker on the back of the router.

Then the main menu will appear, where you need to go to the "Wireless connection" - "Settings" tab.

Then you can see at the bottom of the appeared settings, a drop-down list of available channels. Here, it is recommended to select "Automatic mode" and click the "Save" button.

After that, the device will ask you to wait a few minutes in order to reboot to apply all the settings.

As a rule, after all the described procedures, the wireless network is working correctly. Cutting off all the questions: "What to do?", "Why?" And How?".

All malfunctions in which the router does not work correctly are mainly related to incorrect configuration. A common reason for this is that it distributes wifi, but the Internet does not work. To get rid of this problem, you do not need to do anything specific. As mentioned above, the very first culprit may be the communication channel. This is a common problem and it becomes more urgent every day.

The second moment when Wi-Fi does not work is the user's curiosity, who often likes to make various settings and experiments with the router. Here, everything is easier, you just need to return the standard configuration of all devices, from the computer to the router (if required).

As mentioned above, modern devices have made great strides forward and can solve many problems associated with the operation of the network. But the router itself is a "soldier", what he was ordered to do, then he will do. Therefore, if he distributes wifi, and the Internet does not work, then it would be good practice to check the configuration of all devices.

In contact with

Why is the wifi adapter not working? Why Wi-Fi does not work on a laptop

What to do if the internet is working but wi-fi is not working?

How to set up a router correctly

Why does wi-fi not work on a tablet and phone, but on a computer?

1. Lack of Wifi due to individual settings

2. Weak signal

3. The problem with the drivers

4. Malicious programs

5. Malfunction of the wifi module

6. Malfunction of the network itself

Why Wi-Fi may not work on a laptop and how to fix it

Is there a problem with your laptop or router?

Hardware enable adapter

Software inclusion

Installing and Updating the Driver

External signal barriers

Other causes of Wi-Fi problems

If all else fails

Wi-Fi does not work on the laptop. How to restore the connection

Diagnosing the source of the problem

Hardware enable Wi-Fi of the laptop module

Software enable Wi-Fi of the laptop module

Installing / reinstalling drivers for Wi-Fi module

Fixing connection problems in the router

What to do if Wi-Fi (WiFi) does not work on a laptop running windows 7

Wi-Fi not working on a laptop: the most common problems and their solutions

Router check

Laptop problems

Checking the Wi-Fi driver

Other possible causes of the problem

Reasons why WiFi does not work

Why WiFi Doesn't Work: Video

Checking and Installing the Network Adapter Driver

Reinstalling WiFi Driver on Windows: Video

Drivers for the keyboard

Checking Wireless Status

What to do if Wi-Fi does not work on a laptop: Video

A few more reasons why the WiFi adapter may not work

The router is not distributing wifi: Video

Finding out who is to blame

Causes of a wi-fi network malfunction

Static IP address in the wireless adapter settings or incorrect DNS

Wireless link error

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