Doesn't see internet connection. Step-by-step instructions for self-correcting a network error without Internet access

A wired internet connection is preferable due to higher data transfer speeds and overall signal quality. However, the presence of a large number of physical components located over a fairly large space creates risks of damage to cable connections. In this regard, a USB modem seems to be a more reliable source, although a slower solution for providing home Internet.

So, just yesterday you were enjoying high-definition video, but today your network card does not see the cable? Who is to blame and most importantly, what to do? The following list can be compiled as possible reasons.

• Damage to the network cable.
• The cable disconnected spontaneously.
• The network card is faulty.
• Incorrect computer settings.
• Network card drivers are missing or damaged.

Cable connection problems

The weakest link is the cable itself and the connectors. Usually, part of the cable is located inside the apartment, the rest is in the entrance, on the staircase.

In recent years, installers from ISP service departments have shown obvious negligence in performing their duties. Cables are laid without additional protection by casings and in easily accessible places. Any hooligan with a penchant for vandalism passing by experiences an irresistible desire to pull the rope hanging from above and immediately deprive the entire floor of access to the Internet.

Therefore, first of all, be sure to control the entire installation process of cable Internet, require the provider’s employees to carry out all operations in accordance with GOST and in a protective manner.

The next subtle point is the internal cable wiring. If children and pets live in the apartment, a situation of increased danger is created. It is advisable to place wires in inaccessible places. Cats and dogs simply love to gnaw, bite and tear all sorts of strings. At the same time, electric fields are for some reason very attractive to pets.

1. Carefully trace the network cable in all visible areas of the installation. If damage is detected, it is best to immediately replace the entire unusable piece.
2. Check to see if the plugs have fallen out of the socket. Remove the connector and insert again. You should hear a closed lock click.
3. Carefully inspect the connector contacts. If broken or bent contacts are visible, the connector must be replaced.

You can finally check the functionality of the network cable by connecting another computer. If the Internet appears, it means that everything is in order with the cables and you need to look for faults in the computer.

Computer problems

It is assumed that the problem is in the system unit or operating system of the computer. Do not rush to open the system unit right away. The most common reason is broken Windows settings.

Go to Control Panel\All Control Panel Items\Network and Sharing Center and change the settings

If the Internet worked fine before, you can assume that rolling back the operating system to one of its previous states may solve the problem. Often the Internet stops working after excessively active surfing on the Internet, especially when visiting suspicious sites and without an antivirus installed.

If the rollback does not help, open the Internet connection interface and diagnose the network connection. Check that your network connection settings are correct. Sometimes the reason that the network card does not see the cable is that the Internet speed limit is set incorrectly. Check and adjust according to instructions.

If you need to indicate Internet settings in specific numbers, you need to contact your Internet provider and get all the necessary information for a specific network connection.

Driver problem

Network card drivers are another weak point, often leading to problems with Internet reception. Where can I get these programs and how to install them correctly? A complete set of necessary drivers is located on the Windows operating system distribution disk.

Sometimes it makes sense not to bother searching for specific programs, but to reinstall the entire Windows operating system at once. In this case, all computer settings and settings will return to factory settings, and all necessary drivers will be installed again.

The main obstacle to using this method is the almost inevitable loss of all user settings on the computer and the need to spend time re-installing all working applications. Usually, they resort to reinstalling Windows in cases where the system itself begins to not work very well, slows down, glitches, and often crashes.

You can try a less drastic solution - run automatic system updates. However, if you do not have the latest version of Windows, technical support may already be repainted and no update is available. The situation is approximately the same with left-wing versions of Windows. An attempt to update them will inevitably lead to the destruction of the installed system.

You can download the necessary drivers from the Internet. This path is suitable if you have other computers at home with working Internet. Go to the official website of the network card manufacturer, find your model and find out which divers you need. Download them and save them to a flash drive or DVD. After this, you can go to the Computer Control Panel and install drivers using the Wizard.

Conclusion. If you still fail to match the network cable with the card, and the Internet still does not turn on, all you have to do is turn to specialists for help.

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About 15-20 years ago, no one could have imagined what an important role the World Wide Web would play in our lives. Many probably didn’t even know what it was yet. And today, if the Internet does not work on a computer, then this becomes a real problem. Some people can't even imagine their life without it.

In this article we will try to answer all questions and talk about all the reasons why a computer does not connect to the Internet via a cable. Don't be surprised by some seemingly simple situations. We decided to talk about them because... These are real cases from the practice of our computer service, and they baffled our clients.

Check the internet cable connection

Yes, yes, we want to start exactly with this. After all, often the simplest thing can be the solution to a problem.

Take the time to check if the power cord is securely connected to your computer. It should be plugged into the network connector (Ethernet) on the motherboard. One day, one of our clients tried to simply plug a cord into some hole on the back wall of the system unit, and at the same time wondered why his computer did not see the Internet cable. =)

If you are using a router, then the internet cable should be connected to the Wan connector, and the computer is connected to the router with a patch cord connected to the LAN connector. You can read more about this in our separate article on how to independently connect a wifi router to a computer.

Problems with the cable or network card

This means that the wire connection has been checked, but there is still no Internet on the computer - what to do next? Now you need to make sure that your PC can see the network connection at all. If everything is normal, then the indicator near the connector on the motherboard (or the corresponding indicator on the router) should light up or blink.

If the PC does not see the connection, then you will see this eloquent icon on the screen in the “Taskbar”.

In this case, the following developments are possible:

• The network card of the computer is faulty - you need to either install another “network card” into the system unit, or plug the cord into another computer and see if there is contact there.
• Problems with the wire - check for damage or breaks. Perhaps the RJ-45 connector itself is faulty, then you may find our video tutorial useful on how to crimp a twisted pair cable yourself.

If no visible damage is found, then you need to call your provider and check with him if there are any problems on his part. It happens that there is a line break, or the network equipment fails, so the computer does not see the Internet cable.

The indicator blinks, but still does not work

It also happens that the indicator on the motherboard blinks, i.e. There seems to be a signal, but the icon on the screen is still crossed out. In this case, you need to install or reinstall if there are any problems with it.

This situation can happen if, for example, you just reinstalled Windows. Until you install the necessary network driver, the Internet on your computer via cable will not work.

Connection disabled

The driver is installed, but the computer still does not connect to the Internet? Check if your network connection is disabled. To do this, open “Control Panel” - “Network and Sharing Center”. If yours is like in the picture.

Right-click on the connection and select “Enable” in the window that opens.

You need to set up an Internet connection

Not all providers use automatic distribution of IP addresses and DNS servers. Those. It’s not always possible to just plug in a cable and everything will work right away. Most often, you need to set up a connection with the provider (PPPOE, PPTP, L2TP), specifying your login and password for the connection. It’s best to find out exactly what protocol you use and how exactly to configure it from your provider.

Also, some companies require you to manually register the IP address allocated to you and the necessary DNS servers (most often they are specified in the agreement with the provider). To do this, open “Control Panel” - “Network and Sharing Center”. Next, right-click on your network connection and select “Properties.” Find “Internet Protocol Version 4” there and click “Properties” again. Enter the required addresses manually and click OK.

And sometimes it happens the other way around, when “manual” settings are installed, but “automatic” ones are needed. Let's repeat - you need to know what type of connection and protocol your provider uses.

Problems with the router

One of the common errors that occurs when connecting a computer to the Internet is the appearance of an error message that the network cable is not connected and there is no Internet, although in fact it is connected and may have even worked some time ago. Moreover, there may even be Internet access, but the error remains. What to do in this situation and how to restore communication?

Reasons for the error

There can be many reasons - I propose dividing them into two groups

• Related to problems outside the computer
• Or with the PC itself or Windows settings

The network cable is not connected - what to check first?

Problems with the router

A separate discussion requires consideration of possible errors when setting up a wifi router if the computer is connected to the Internet not directly, but through it. This topic is extensive, we have already touched on it several times on the blog. In particular, the problem when , or . But within the framework of this article I can only give some general advice:

The network cable is not connected or there is an unidentified network on the computer

Before understanding the possible causes and ways to fix them related to system settings, I note that the error message may also look like “Unidentified network” or “No Internet access”.

Let's go through the main methods that will 99% correct our situation, if the problem is still due to the connection of the equipment installed on the computer in combination with Windows settings - we will leave out the possible banal failure of the network card.

1. device Manager

   I will show on Windows 10 - first, let’s try to go to “Start (right click) - Device Manager”

   

   Open the “Network adapters” branch and find the line “Realtek PCIe GBE Family Controller”.

   
   

   Right-click on it and in the new window select “Remove device”

   
   

   Then we reboot the computer - when the operating system boots, it will appear in the system again.

   If after this the Internet does not work, then we try to go to “Properties” in the same way.

   
   

   Here we go to the “Advanced” tab - before our eyes we will see a long list of different values, among which you need to find “Speed ​​& Duplex”. Here, the right drop-down list should contain the value “Auto Negotiation”.

   

   If this is the case for you, but the Internet does not work, try playing with the selection of other values

   

2. Finally, the last thing that could be causing the “Network cable is not connected” error is a driver malfunction.

   In general, it is recommended to always have the latest version of drivers for all PC components. Download from the manufacturer’s official website and update the driver for your network card. It’s even easier to use a ready-made kit - I talked about this in detail in this article.

Thank you! Did not help

There are often situations when, after connecting a computer or laptop to the Internet using a network cable, the error “Network cable is not connected” appears. This is most likely not even an error, but simply the status of the network adapter, which can be observed in network connections.

It turns out that the computer does not respond to the connection in any way; the network cable is not connected, although it is connected to the computer and inserted into the network card connector. Icon on the notification panel with a red cross. Well, the Internet, of course, doesn’t work. This is what it looks like:

And most importantly, the cable is connected. From a router, modem, or directly from the provider’s equipment. This error can appear on both a PC and a laptop. It also doesn't matter which Windows is installed on your computer. Only in Windows 10 the message “Network cable not connected” will be next to the “Ethernet” adapter, and in Windows 7 – next to “Local Area Connection”. And in Windows XP, a pop-up window with this error still appears if you hover your mouse over the connection icon. The same thing often happens.

The same goes for the connection method. Some people have a network cable coming directly from their provider (for example, Rostelecom), while others use a modem, Wi-Fi router, or terminal.

What could be the problem?

There can be many reasons. We list the main ones:

• The network cable is incorrectly or not fully connected.
• The network cable is damaged. The contacts in the connector may have come loose (into which the network cable itself is crimped).
• Hardware problems with the router, modem, provider equipment. Or the network card itself in your laptop or PC has broken down.
• Problems with the network card settings. Most often, it cannot automatically determine the speed and duplex. I'll tell you about this in more detail.
• There are some problems with the network card driver.
• Viruses, firewalls, some programs. Yes, yes, they can also cause the “Network cable is not connected” error to appear.

How to find out the reason and what to do first?

• First, restart your computer, modem, router (if you have one).
• Disconnect the network cable and connect again. Also check the connection on the router (if the Internet is connected through it). Connect the cable to another LAN port. Pay attention to whether the LAN indicator on the router lights up after connecting the cable. You can see the instructions: .
• If possible, connect via a different cable.
• You can lightly move the network cable where it enters the connector. And at this moment look at the status of the network adapter on the computer. Perhaps the contacts are leaving there, and this way we can find out.
• If you have another PC or laptop, try connecting it. This way we can find out what's going on.
• If the Internet goes through a router, then try connecting the cable from the provider directly to the computer.

I would divide the solutions into software and hardware.

The network cable is not connected, although it is connected: solutions to the problem

1 I would try removing the network card from Device Manager. After a reboot it should recover automatically. Go to Device Manager (the easiest way to find it is through a search, or press the Win + R key combination and run the command devmgmt.msc).

Open the "network adapters" tab and find your network card. Depending on the manufacturer and driver, the name may be different. The name may contain "LAN". For example, on my laptop it is “Realtek PCIe GBE Family Controller”. By the way, pay attention to whether there is a yellow icon next to it. Right-click on it and select “Remove device”.

We confirm the deletion and restart the computer. Perhaps after a reboot everything will work and the computer will see the connected network cable.

2 Check the speed and duplex detection settings. In Device Manager, right-click on the network card (as I showed above) and select "Properties".

Next, go to the “Advanced” tab. In the list, find and select "Spread&Duplex". And in the drop-down menu on the left, set the value to "Auto Negotiation". But if you initially had this option installed there, then try setting a different value. For example: "100 Mbps Full Duplex". You can try different options. Don't forget to click Ok and restart your computer.

It just often happens that the network card cannot automatically detect speed and duplex.

3 Network card driver. You need to try reinstalling it. Download the driver from the website of the manufacturer of the card itself (LAN), laptop, or motherboard of your computer and start the installation. You can look at the article on this topic:.

Other reasons why the computer does not respond to the connection of the network cable

1 Network card failure. However, in this case, you most likely will not see it in the device manager. But it happens in different ways. To find out, you need to connect another cable to it. Connect to another router or provider. Or connect other devices to the same cable. 2 Problems with the provider. For example: an employee of the provider was connecting the Internet to another subscriber, and accidentally disconnected your cable from the equipment, or the cable was broken somewhere in the entrance. Or maybe someone cut it on purpose. In such cases, the message “Network cable is not connected” will appear. You need to contact your provider's support. Just before doing this, it would be good to make sure that the problem is not in the network card of your computer. It also often happens that the contacts on the connector into which the network cable from the provider is crimped are lost. You just need to do it again and correctly. Or call the experts. 3 Problem with the router. May be. But checking all this is very simple. Disconnect the Internet from the router (only if you don't have ADSL), and connect it directly to your computer. If the computer sees the network cable, then the problem is either in the router or in the cable with which you connect the PC to the router. You can also look at the article: . 4 The network cable is faulty. And this can happen. But, if we have a cable that we connect the computer to the router, then it is easy to check by connecting it to another device, or by connecting the cable from the provider directly to the computer’s network card.

When your connection to the Internet is lost, there is no need to panic and call all stations shouting that, for no apparent reason, you cannot get into the vastness of the World Wide Web. The reasons why problems may arise with the cable are as follows:

1. Broken cable.
2. Problem with connection settings.
3. Network port failure.

What to do when the computer stops seeing the network cable.

To accurately determine the cause of the malfunction, you need to perform a number of actions.

1. As trivial as it may sound, check whether the power cord is plugged into your computer correctly.
2. If there is a second cord, connect it.
3. Go to Device Manager (find it in Control Panel).
4. View the status of the network card, whether it is enabled or not. If necessary, check for new drivers.
5. Try connecting the cord to another computer.
6. Connect your computer to someone else's network cable (visit your neighbors).

If the second PC connected to the Internet with the same network settings, then you have a reason to start being sad. Firstly, the cause of the malfunction may be related to a breakdown of the port itself for the power cord. The situation becomes more complicated if the port is built into the motherboard. Replacing it will be financially difficult. It is easier to purchase a new network card if there is a corresponding connector for it on the computer (which most likely is).

Pay attention to the icon " LAN connection" If this connection is present, then most likely you did not install the drivers or settings on the modem correctly.

Before going to a service center or store, do all the above steps again.

The reasons for the lack of connection to the network can be both software and physical. First, you should carry out diagnostics, which consists of three main stages: checking the integrity of the wires, setting up the router and computer.

Problems on the provider side

It may not be your fault that you are not connected to the internet. If the system worked properly, no additional software was installed, and the settings were not changed, then the provider is probably to blame. Call the customer service center and find out if they have problems with the network. Additionally, you can recruit friends who use the services of a similar company.

If you have mobile Internet, go to the provider’s official group or website. Users react quickly to outages, so they often write their complaints in the group or on the provider’s page. They will be an indicator to you that shutdown is widespread. There is only one solution - wait for corrections.

Checking the physical connection

As a rule, if there is no Internet connection, you will see a red circle with a cross on the tray icon (on the right). This is a clear sign that there is a break somewhere. A rare situation is damage to the network cable or connector. Carefully inspect the entire length of the wire throughout the apartment, looking for cracks or other defects. Check the connection to the site where the hub is being installed for several apartments. It is impossible to determine any further breaks (the cable is underground). This is the job of the provider's specialists. If the plug is damaged, you will have to change it, and this is difficult to do without special tools and skill.

Problems with the router and their solutions

Up to 80% of all problems are related to incorrect operation of the router. If the Internet does not connect when connected directly, skip this section.

Troubleshooting is possible through a simple reboot. If you have to do this regularly to restore operation, take the device to a service center to diagnose and identify the cause. Restarting the router is done in the following ways:

• Turn off the power supply. Wait 10 seconds and then turn it back on;
• press the Power/On/Off button (if equipped) to turn off. Then activate the device.

At the same time, restart your PC. Do not press the Reset button on the modem (this is a full reset to factory settings as a last resort).

Settings in the router web interface

All changes to router parameters are made in the system menu - web interface. We will tell you how to get into it and what changes should be made.

Login to the web interface

To enter you need:

1. IP address for accessing the modem;
2. login and password for the device.

The information is located on a label attached to the case. Look for the Default Settings or “Username/Password” block. Write these values ​​down on a piece of paper or remember them.

1. Open a browser on the computer/laptop that is physically connected to the modem. Enter the factory IP, which is copied from the label.
2. In the window, enter Login and password. Typically, this is the English word admin.

The main menu of the router will open.

Setting up an internal network

The LAN item is responsible for setting the local network parameters. At the user's discretion, the range of working IP addresses is set here. It must correspond to one of three ranges allocated for private networks:

Check the device's default gateway. Through it, exchanges occur with other devices. Typically the default is 192.168.0.1 or 192.168.1.1 (if you are using that range).

Setting up an Internet connection

The second important step is to correctly configure the connection type. Providers can use:

If there is no internet connection, make sure you set the correct type. Call the supplier and find out the necessary information. Some modems in the interface have a “detect” button. With its help, the connection type is set correctly automatically.

Changing the router's IP address

For the network to work, it is often necessary to set the correct router address. This is done as follows:

• go to the menu and select the LAN section;
• enter the required parameters in the IP-address field;
• Click the “Save” button.

The address must be within the local network range.

MAC address cloning

Some providers provide Internet access to a specific Mac address, for example, a computer. There is a need to change this parameter for the router. Most manufacturers include a Mac address cloning feature. It is activated as follows:

If you can't find the function, read the technical manual.

MTU setting

MTU determines the maximum level of information transfer. This parameter controls the number of payload bits that fit into a packet. Everything is forwarded without fragmentation, so you can increase the transfer speed. As a rule, the MTU is set automatically by the device, but not always correctly. A correctly adjusted level will allow you to:

• expand the channel;
• minimize unnecessary load on the channel, which will increase speed;
• remove or minimize packet transmission errors.

Use the command Ping www.google.com –f –l 1500. Start with exactly 1500. Next, decrease the parameter by 5 units, and then check how many packets are lost. If 100% of the data is successfully transferred, change this parameter in the router settings (in the connection type selection menu). Please note that the limit values ​​depend directly on the protocol.

Problems with your PC or laptop

If all else fails and the “no Internet connection” error remains, check your PC.

Reinstalling the network card driver

There is special software for each PC/laptop component. Windows usually installs drivers on its own from its database, but this procedure does not always help. It is recommended to install everything yourself.

The best method is to download the required software from the official website of the network card manufacturer. Find the “Drivers” or “Support” item in the menu, indicate the model and version of the OS you are using. Download the installer and then run the installation.

The second option is Windows tools:

1. right-click on the “My Computer” icon and select the “Properties” line;
2. select "Device Manager";
3. Click on the network card RMB, and then on the line “Update drivers”.

The driver may be missing for some reason. Then specialized utilities, for example, Driver Genius, will come in handy. Download it from the developers site, and then update all outdated drivers. The utility database is regularly updated, so it is always up to date.

Replacing the MAC address of a network card

Users can change the MAC of the network card itself in two ways. The first includes the following steps:

Remember the MAC address includes exactly 12 digits in hexadecimal s/s only. After the changes, be sure to check the success of the operation using the ipconfig /all console command.

The second method involves entering the address through the registry. Go to the path shown in the image and in the DriverDesc parameter change the NetworkAdress line.

Enabling the network card in BIOS

In some situations, it is necessary to enable “networking” in the BIOS. We will look at the procedure using the example of a classic BIOS (not UEFI). To do this, enter the BIOS and follow these steps:

Now let's look at how to perform a similar process on UEFI BIOS versions (example for Asus motherboards):

1. open the “Advanced” tab;
2. select OnBoard Devices Configuration;
3. set LanController to Enabled state.

Diagnosing Internet connection problems

We recommend using standard Windows OS tools to troubleshoot Internet problems. Often this procedure saves you from connection errors, which eliminates the need to study the system menu and BIOS. To start you need:

Additionally, activate checks for the network adapter and home group. Download and run the FixWin utility on the flash drive. FixWin is a powerful tool for troubleshooting operating systems from Microsoft.

IP Receiving Settings

Using a direct connection without a modem, set automatic receipt of addresses. These are necessary settings for the OS. They are installed quickly and easily:

After this, restart your computer and check the network is working.

Firewall check

The Windows system has its own protection against viruses and potentially dangerous resources. A “firewall” (or “fire wall”) can block access to specific or all sites. Luckily, it's easy enough to turn it off:

Remember that without an antivirus installed, your computer will be completely defenseless against malware from the global web.

Clearing the DNS cache and resetting TCP/IP protocol settings

Failures in the TCP protocol or DNS cache can result in connection loss. Users can reset the cache on their own:

These steps will not damage system files, so perform them without fear for the safety of the operating system.

Enabling FIPS Compliance Mode

Try turning on federal compatibility mode. This is a current solution for residents of Russia. Its activation is carried out as follows:

The proxy server is not configured correctly

Often it is impossible to connect to sites due to incorrect proxy server settings. There is an option to change the proxy in the OS interface. Go to Internet Properties and then open the Connections tab. Click on the “Network Settings” button. Next, check the box to use a proxy. Enter the correct IP and port. You can obtain this information from your network administrator (service provider).

Internet does not work on your phone or tablet

If you can’t log into the network through mobile gadgets, for example, the Internet does not work on your tablet, then the most common reasons are:

• compatibility of the frequency ranges of the router and smartphone;
• activation of a wireless access point;
• hidden network or not;
• whether the DHCP server is activated on the modem;
• Wi-Fi module damage;
• Airplane mode is activated on the phone;
• The smartphone does not support the WPA2-PSK encryption standard

If another device connects without problems, then the problem is in a specific device.

Other Possible Problems

We have described the most common solution methods available to ordinary users. If they do not help, be sure to call the service center. Perhaps your router or network card has burned out, then all the described manipulations will be useless. After replacing the components with working ones, of course, the network connection will be restored without additional actions (taking into account that you did not introduce additional problems through independent intervention).

Be careful with Chinese routers. Their menu is in Chinese, making it almost impossible to understand. In such situations, try updating the firmware to Russian. Only after this can any manipulations be performed.

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