Reset the BIOS on the motherboard. What happens if you reset the bios settings?

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Most of your computer settings and your PC's time are stored in a system such as the BIOS. Many people ask this question, how to reset bios settings to return to factory settings? I want to say that this question is asked not only by those who like to tinker with the BIOS settings and change them so that the computer will not turn on, but also by quite experienced users. Still, it is human nature to make mistakes and we learn from this.

So, in this instruction I will look at several options for resetting the BIOS. A reset is needed in order to return to the factory settings, that is, the current configuration that you configured will be completely reset. In this case, the problems that often tormented you may be resolved, for example, the operating system did not load. Resetting will also help if there is a password and you have forgotten it.

I also forgot to say that the BIOS can be reset programmatically and physically. You will find out what these two methods are below.

Software reset method

Option 1 - reset using BIOS

You can also use the BIOS itself to reset the BIOS. Some people don’t know, therefore, there is already an article about this on our website, follow the link.

In older BIOS versions we usually see blue screen with various points. So, all we have to do is select the item Load BIOS Setup Defaults. It may be called differently depending on the manufacturer of your laptop or motherboard. For example, there are also such names: Load Optimized Defaults, Load Fail-Safe Defaults.

Let's say in laptops we can reset the BIOS if we go to the tab Exit and we will find a point there Load Setup Defaults.

As you can see, this parameter looks the same almost everywhere, just words have been rearranged somewhere or others have been added. B, the reset is almost the same, the item is called Load Defaults and is located in the section Save and Exit.

Option 2 - reset bios using the Debug utility

This utility is available in Windows family, you only need to open the Run window using the keys Win+R and enter the command there debug. A window will open into which we enter one by one following commands(For AWARD and AMI BIOS):

Physical reset method

Option 1 – Reset BIOS using a jumper on the motherboard

Almost all motherboards are equipped special jumpers which will help you reset the bios. You can see what this jumper looks like from the image below:

When we close the contacts, the operating parameters change in some way motherboard, V in this case The BIOS is reset. To carry out this operation you need to perform several actions:

This is the most important point. Turn off the power, first turn off the computer itself, then press on the back panel system unit switch. For better effect also unplug the plug from the socket.
Open the system unit case and find there, there should be a jumper next to it and it has a signature like: CMOS RESET, BIOS RESET, CCMOS, Clear CMOS, CRTC, Clear RTC. Also, there should be two or three contacts responsible for reset.
If there are 3 contacts, we need to move the jumper to the second position; if there are 2 contacts, then to reset we need to close these contacts with any conductive object, for example, a screwdriver and wait a little - 20 seconds.
If you are not sure how to use the jumper, then look at the documentation for it. motherboard, everything should be written there.

I want to say that modern and top-end motherboards even have special button CLR CMOS, which helps you quickly reset the BIOS.

Option 2 - removing the CMOS battery

Responsible for the operation of the BIOS and the motherboard clock regular battery. To reset time and CMOS memory You just need to remove the battery, in this case the BIOS is reset, but for this you need to wait a few minutes, preferably 20 minutes, if that doesn’t help, then do the same operation, just wait longer, but usually this is not required.

There are motherboards in which the battery cannot be removed, be careful and do not use unnecessary force.

In order to remove the battery, you need to press the latch, and to insert it back, just press a little and the battery will snap into place.

I hope that these methods of resetting the BIOS helped you; if you have any questions, ask them in the comments.

Greetings!
BOIS stores information and manages basic equipment what is installed on your computer. The BIOS is also responsible for the correctness of what is displayed in operating system time.

Why reset BIOS settings

Resetting the BIOS settings to their original settings may be necessary in the following situations:

1) Have you installed any optional equipment into your PC, but refuses to be detected by the operating system, or problems arise with its operation: the equipment disappears from the system from time to time, the system freezes, etc.

2) In an attempt to overclock your computer, you have set parameters in the BIOS that are not actually supported by the hardware installed in your PC. As a result, the computer stopped turning on altogether.

3) You have updated the BIOS, and in this situation it is recommended to reset the settings.

4) There is a need to reset the password that is requested when you turn on the computer (before the installed operating system actually loads).

This material will describe in detail and demonstrate with specific examples how to reset the BIOS settings to default (default) on a personal computer and laptop. We will look at resetting the settings both from the BIOS itself and by directly switching the contact/battery on the computer motherboard, which powers the BIOS chip and prevents you from “forgetting” the saved settings.

Resetting the BIOS through the corresponding menu item

The simplest and most logical way to reset BIOS settings is to use the menu item that is available in the settings of the BIOS itself.

It should be noted that this item is available in almost all versions and variants of BIOS, however its name and location may vary.

To orient you, I will show you specific example location of this item in a standard BOIS.

To enter the BIOS settings you need straightaway after turning on (even before the operating system itself boots), press the key several times Del on the keyboard of a personal (stationary) computer, or another key if it is a laptop. The key most often used to enter the BIOS on laptops is F2.

In the once popular and widely used version of the BIOS, this item was located in the main menu:

Load Fail-Safe Defaults- reset BIOS parameters and settings to default. In this mode, all computer components will undergo a full test. It is recommended to use it before installing the operating system and if you suspect that some component is working intermittently, for example, a die random access memory.

Load Optimized Defaults- if you select this item, then settings and BIOS settings will also be reset, but with a focus on optimization. IN this mode Some components will undergo a “reduced” test, which will make the computer boot faster.

If we talk about laptops, then everything is somewhat more complicated. They have an interface BIOS menu can be heavily redesigned and stylized to match the company's brand.

For example, in an HP laptop the BIOS looks like this. Here, resetting the settings is carried out by selecting the item Restore Defaults.

The name of the item that resets BIOS settings may be different, namely: Load Setup Defaults, Load Optimized Defaults, Reset to Default, Factory Default, Setup Defaults and consonant. The location may also differ; most often this item is located in the tab Exit.

Based on the above, you will need to find this item in your BIOS version (including UEFI) and click on it. Navigation in the BIOS is carried out using keys arrows, and select with the key Enter.

After resetting the settings, the computer will either restart or you will need to exit the BIOS with the settings that were reset to the default option saved.

If you do not have access to the BIOS due to set password, or the computer refuses to turn on at all after “experiments” with the BIOS settings (alternatively, in an attempt to overclock the computer), then the following method of resetting the settings will suit you.

Resetting the BIOS via a jumper on the motherboard

Most computer motherboards have jumpers that physically consist of pins and, if necessary, are shorted using attachments (jumpers). By closing/opening certain jumpers, the configuration of certain PC parameters is carried out.

By closing the jumper that relates to the BIOS, the settings will be reset to the default option.

To reset the BIOS using a jumper, do the following:

Disconnect the computer from the electrical outlet by unplugging the cord from the outlet. After which you need to arm yourself with a screwdriver and unscrew the screws that hold the side cover of the computer.

Having gained access inside, you will need to find a jumper on the motherboard located there, which is responsible for resetting the BIOS settings and parameters. In most cases, this jumper is located near the battery, which powers the BIOS and prevents you from forgetting the settings.

As a guide, the jumper is often labeled accordingly: BIOS RESET, CMOS RESET, CLEAR CMOS, and the text can be abbreviated, for example, CLR_CMOS.

The jumper itself can consist of two or three pins. If there are three pins, then move the jumper to the next pair of pins, and if there are two, then you should borrow a jumper from another place on the motherboard. Just before borrowing a jumper, remember, or better yet, take a photo of its original position.

After this, you need to hold the power button for about 10 seconds. The computer, of course, will not turn on because... completely de-energized, just this procedure necessary to reset BIOS settings.

Having done this, return the jumper to its original position, and then put and screw back the computer cover, connect the power.

Done, the BIOS has been reset. Now you can configure the BIOS settings again, or use those that were set by default.

Method for resetting BIOS with removing the battery

The BIOS reset jumper is in most cases located next to the battery. This is due to the fact that the chip in which the BIOS settings are stored is not non-volatile. This battery powers the BIOS, allowing you to save user-specified settings, as well as maintain the operation of the built-in clock during periods when the computer is de-energized.

After pulling the latch, carefully remove the battery for a few minutes, and then return it to its place - the BIOS settings and parameters will be reset.

It should be noted that in rare cases the battery is not removable. Take this fact into account if you see that the battery is very firmly seated in the slot.

Brief summary

Now you know in what cases you should resort to resetting the BIOS, and how this can be done. The first method is universal, and the second and third are more suitable for stationary personal computers. Laptops also have a battery that powers the BIOS, but getting to it is often much more difficult.

If after reading the material you still have questions, do not hesitate to put them in the comments.

Sometimes, in case of any computer malfunctions or erroneous changes in settings, it is necessary to reset the BIOS settings. This way you can quickly revive your PC or laptop. There are several ways to return the original BIOS settings; now we will look at each of them in more detail.

Ways to return the original BIOS settings:

As you can see there are 5 options. But this may be for a system unit; for a laptop, usually only the first 3 points are suitable. The fifth point is quite rare; the button is located on the computer’s motherboard, as are the jumpers.

When is it necessary to reset BIOS settings?

Let's first figure out in what cases it is necessary to reset the BIOS settings:

In case you have forgotten the password to enter the BIOS or operating system.
When the computer does not load the OS, for example, the boot priority in the settings has been changed.
If incorrect changes have been made to the BIOS settings.

These are the main reasons why it is usually necessary to reset the basic I/O system. There are, of course, many other reasons: in the case of overclocking the processor or when you have gone too far, and old computers do not know how to automatically return the original settings for normal temperature component.

There may be a reason why you need to reset the BIOS - this wrong update wow, bad firmware and all that. If the computer does not turn on, but only makes sounds (), then resetting the settings in some cases can also solve this problem.

How can I reset the BIOS?

As mentioned above, there are several ways to reset the BIOS or return to factory settings. What happens in this case? After the reset, the BIOS returns the original settings as they were from the very beginning, that is, the factory settings will be set.

It is also important to know: in the case of points 3 to 5 (see Table of Contents above), it is necessary to open the system unit or open the laptop case, this way you can lose the device’s warranty. But, if you don’t want to lose the warranty, and the laptop does not allow you to boot into the BIOS, then resetting with the first two options is not possible.

And so, now we will consider each of the reset points in as much detail as possible.

Resetting settings from the BIOS menu

If there is such an opportunity to get into the BIOS menu, then you don’t have to bother too much and go into the system unit or hide the laptop, because you can reset the settings directly in the BIOS Setup itself. Let's take a closer look at how we can reset our basic I/O system in this way.

The computer will reboot and check if resetting the BIOS helped you.

Reset using Debug utility

Debug- standard utility included in the 32-bit Windows OS. If you can boot the operating system and have the opportunity to use it, but you still need to reset the BIOS to factory settings, then this item is just for you, because again, you don’t need to go into hardware or even incomprehensible BIOS menu settings.

Launch the "Run" menu (Start-Run, or the Win+R key combination)
Enter debug and click on OK.

A utility window will open resembling command line. Next you need to find out what BIOS you have. You can find out the BIOS version and manufacturer as follows: you need to open the "Run" menu, enter MSINFO32 and click OK. Afterwards, a window will open where on the right in the “Element” column you need to find the “BIOS Version” item, opposite the manufacturer and version will be written.

If AMI BIOS or AWARD, then you need to enter the following command in Debug (after each line you must press Enter):

O 70 17
O 73 17

If Phoenix BIOS, then here is the command:

O 70 FF
O 71 FF

We just enter the first line - press Enter, also the second and third. After executing these commands, the BIOS settings will be reset to factory settings. To check if everything worked, just restart the computer.

Reset using CMOS battery

If there is no way to reset it programmatically, as in the first two options, then you will have to resort to a more stringent method, but nevertheless quite effective. If you are not afraid of losing the warranty of your laptop, then this is the best way for you to return the BIOS to factory settings.

All! The BIOS settings have been reset, as you can see there is nothing complicated about it, just remove the CMOS battery, wait a little and insert it back.

Resetting BIOS using a jumper on the motherboard

This is also effective method Resetting the BIOS, however, is only suitable for system units; such a jumper is almost never seen on laptops.

It can also be found when instead of three jumpers there are two. They are also signed - CLR CMOS. In this case, to reset the BIOS, you just need to close both jumpers with something conductive, a screwdriver or wire, for example.

But in addition to the options above, it also occurs when there can be more contacts, like in this example, below - 6 jumpers. But closing them is also not difficult; everything is done in the same way. Where the jumper is installed by default - to reset, you need to install it opposite, the next contact is nearby, in a row, of course.

That's it, refund initial settings The BIOS is completed, now you can reassemble the system unit and turn on the computer.

Reset using a button on the motherboard

As already mentioned, such a button is quite rare on a motherboard. But nevertheless, we will not miss this method of resetting BIOS settings and will also consider it in a little more detail.

The location of this button (more precisely: CLR CMOS) can be either inside the system unit or outside, somewhere on the back side of the system unit. Here are some sample pictures showing where this button might be located:

The examples above show what the CLR CMOS buttons inside the system unit might look like. The pictures below show what the BIOS reset buttons may look like from the outside:

And as you probably already understood, resetting BIOS settings using this button is quite simple - just click on it and the original BIOS settings will be returned.

In these ways (and there are 5 of them in our article!) you can reset the BIOS settings to factory settings. There are several other methods, but we did not consider them in this guide. If you know how else you can reset the basic I/O system, be sure to share with us in the comments.

Working with the BIOS requires great care, since incorrect settings lead to the computer no longer turning on or correctly detecting connected equipment. You can reset BIOS settings using three proven reset methods on your PC and laptop.

Reset in BIOS settings

If you manage to get into the interface of the basic I/O system, then there is still a chance to reset the BIOS settings through the corresponding item in the “Exit” section. This is one of the most simple options, which does not require opening the computer system unit. So, to restore the BIOS and return standard settings, follow these steps:

This method works on a laptop and is suitable for a computer. After rebooting, the BIOS settings will be set to default. All changes made by the user after purchasing the computer will be canceled.

Jumper reset

The first method works if you have access to the BIOS. To reset the BIOS settings to the factory state if you have forgotten the password, you will have to disassemble the system unit and use a mechanical jumper, changing the position of which interrupts the supply of current to the CMOS battery. The battery is responsible for storing BIOS settings, so if you temporarily turn off the power or remove it, the parameters will be reset to factory settings.

To completely discharge the remaining voltage, hold down the power button of the system unit for 10-15 seconds. The computer is de-energized, so nothing will happen. Then return the jumper to initial position and assemble the system unit. Factory settings have been installed, now all parameters in the BIOS are set to default.

Removing the CMOS Battery

Speaking of the jumper, we have already mentioned the CMOS battery, which is responsible for storing BIOS settings. Accordingly, if you remove it from the motherboard and then insert it back, you can restore the parameters that were set by default. The algorithm of actions is the same as when using a jumper.

After resetting the settings, you need to reinsert the battery and reassemble the system unit. After turning on the computer, there will no longer be any password on the BIOS, and all parameters will return to the factory state.

Reset on laptop

If the system unit is quite easy to disassemble, then when BIOS reset On a laptop you may encounter some difficulties. It's good if you can go into the BIOS and restore the default settings by selecting the appropriate mode in the “Exit” section. If a password is set on the BIOS, you will have to disassemble the laptop. Turn the laptop over so the back is facing you. Look to see if there is a small hole on the laptop labeled "CMOS".

If found, insert something sharp into the hole - for example, a paperclip. Wait for 30 seconds to reset the BIOS settings on your laptop. If there is no hole, you will have to remove back cover and look for the CMOS battery or JCMOS pins on the motherboard.

Disconnect the laptop from the network, disconnect the connected devices (mouse, speakers), remove the battery.
Remove the back cover (on some models it is enough to remove the protection of the RAM and hard drive).
Remove the RAM sticks and hard drive.

Under the RAM strips there should be two contacts that are labeled “JCMOS”. They need to be closed with a screwdriver.

Those who like to tinker with the BIOS settings sometimes encounter situations where something doesn’t work right. For example, if you set incorrect parameters in the settings or update the BIOS incorrectly, then the correct work computer. This may manifest itself in unstable work system or even its complete failure (the computer simply will not turn on). And resetting the settings in the BIOS will be the only option in this case. And to reset all BIOS settings to factory settings, you need to know how to reset the BIOS.

A little about BIOS

BIOS (Basic Input-Output System) is basic system input-output, or more simply put, a program that is stored in
ROM (read-only memory) chip and launches and configures all equipment even before loading the operating system. BIOS is located on the motherboard and is the code responsible for the operation of all devices in the computer (or laptop). The better this code is, the faster the computer will work. All basic parameters equipment is stored here. Although some parameters are set during the installation of the operating system. When turned on computer BIOS within a few seconds it tests all devices for functionality and, if everything is normal, transfers control to another program that is already loading the operating system. In the BIOS you can change many settings, including overclocking the processor or video card. In fact, unsuccessful overclocking of a video card or processor may be the very reason why you need to reset the BIOS settings.

It's quite simple to do. To do this, you will need to restart the computer (or turn it on if it was turned off before), and as soon as the first inscriptions appear, you must press the key. Which one exactly depends on the model of the installed motherboard. Most often these are the “Del”, “F2” or “F10” buttons. You can find out which key activates the BIOS call when the computer boots at the bottom of the screen (before the OS loads).

As a rule, calling the BIOS may be necessary in case (this is one of the reasons). To install everything correctly, you need to completely clean HDD, but this can only be done through the BIOS.

Why reset BIOS settings?

There can be many reasons why you need to reset the BIOS settings. For example, the user was too overzealous with tuning the computer's performance. Namely: overclocked the processor or video card to critical levels. For security reasons, the computer now does not want to turn on. It informs the user that the device temperature is too high and turns off. Of course, some models can automatically restore factory settings, but this is not always the case. Most often, the user has to perform this procedure independently.

Another reason why you have to think about resetting the BIOS is an unsuccessful update. If mistakenly (or out of ignorance) there was one that does not fit the motherboard or BIOS version, then the computer will start to “fever”. This situation can only be corrected by resetting the BIOS.

A fairly common reason for resetting the BIOS is also resetting the password. That is, if when you turn on the computer, the system asks for a password, and the new owner of the computer, of course, does not know it, then you have to reset the settings in the BIOS.

Other reasons may be:

the computer does not respond to pressing the power button (does not turn on);
the computer turns on, but makes some sounds and does not load the operating system;
The computer constantly freezes, reboots, etc.

How to reset BIOS settings?

There are 3 ways to restore BIOS settings to default:

from the BIOS menu;
using a jumper;
using a battery.

Laptop owners should take into account one fact: in order to reset the BIOS using the last 2 methods, you will need to disassemble the laptop, i.e. you will lose the warranty on it (if it is still valid). To solve this problem, it is better to contact specialists at the service center.

So, the first method is to restore the default settings from the BIOS menu. First you need to go into the BIOS. This can be done using the “Del”, “F1”, “F2”, “F10” buttons (depending on the motherboard model). If you cannot enter the BIOS due to the password you have set or various errors, then this option is not suitable for you.

You can reset the BIOS settings to factory settings from the menu BIOS output Setup - the required parameter is called “Load Optimal Defaults”

Then you need to find the option to restore default settings. The position and name of this option may vary depending on the motherboard model. Most often this item is called “Reset to Default”, “Factory Default”, “Setup Defaults” or something like that. This item can be located either in one of the tabs or next to the navigation buttons. You must select this option and confirm that you really want to reset all settings to default. If for some reason you do not have this item (or you did not find it), then you can use another method.

After this you need to save the changes. When exiting the BIOS, the system will ask if you need to save the changes. After confirmation, the computer will restart automatically. If you need to set certain settings, you need to go into the BIOS again, make all the necessary changes and restart the computer again.

Method two is to reset the BIOS using a jumper. First, you need to turn off the computer using the corresponding button in the operating system. Then you need to find the switch on the back panel of the system unit (if there is one) and switch it to the “O” (off) position. If there is no such switch, then you just need to unplug the computer from the outlet.

After this, you need to open the case of the system unit. The goal is to get to the motherboard. You need to be very careful when working with computer components, especially avoiding electrostatic discharge, as it can damage some parts of the computer. It is advisable to ground yourself before touching the components.

Next you need to find a 3-pin jumper on the motherboard, usually located next to the CMOS battery. The jumper will be installed on 2 pins (there are 3 in total). It may be labeled CLR, Clear, Clear CMOS, etc. It is advisable to look through the documentation for the motherboard to make it easier to find the jumper.

Then you need to move this jumper to the other 2 pins. For example, if it was on the 1st and 2nd pins, now you need to move it to the 2nd and 3rd. To avoid damaging the pins, you need to pull out the jumper in a vertical position.

After this, you need to press and hold the computer's power button for about 10-15 seconds. Since the computer is turned off, nothing should happen. This will discharge the remaining voltage on the capacitors and reset the BIOS settings. Next, you need to return the jumper to its original position, and then close the system unit case.

Now you can plug in your computer and press the power button. If necessary, you can go into the BIOS to change the settings.

AND last method- Restore BIOS settings to default using a CMOS battery. You need to turn off the computer again, switch the switch to the “O” (off) position and unplug the cord from the outlet. Then you need to open the case of the system unit; to work you will need access to the motherboard. You can get to the battery on your laptop by opening the panel on the bottom of the laptop. If there is no such panel, then you will have to get to the battery using special tools.

After this, you need to remove the battery. It can be located in different places (depending on the motherboard), but most often it is located near the PCI inputs. Next, you need to reset the BIOS by holding the power button for 10-15 seconds. Then you need to install the battery, close the case and connect the computer to the outlet.

These are the ways you can reset the BIOS. If such manipulations are quite difficult for you, it is better to use the services of a service center.