In most cases after replacing the motherboard Windows stops loading. When loading windows, a blue screen (BSOD) appears with an error STOP 0x0000007B. This is due to changing the ATA/SATA bus controller.

The fact is that Windows cannot independently change the controller driver when loading. As a result, when booting, the operating system simply loses the hard drive and cannot continue booting.

The question arises: how to produce replacing the motherboard without reinstalling Windows? After all, reinstalling Windows is not difficult, but all programs and settings will be lost. And this is often unacceptable!

Method replace motherboard without reinstallation OS three. If you have Windows 7, go straight to option 3

Option 1 - the old motherboard is working (Windows XP)

If it is possible to boot into Windows XP with an old motherboard, then you need to replace the IDE and SATA controller drivers with standard ones.

To do this in device manager open the properties of the controller (the name depends on the motherboard model). On the tab Driver press the button Update.

We answer the question about connecting to the Internet to search for a driver No, not this time and press Further. In the next window select Installation from a specified location and click Further. In the driver search options window that appears, select Don't search. I will choose the right driver myself and press Further.

In the window that appears, select from the list Standard Dual Channel PCI IDE Controller and press Further.

After the driver installation is complete, click Ready and restart the computer.

After loading, check in Device Manager what is installed standard IDE controller driver and turn off the computer.

If there is no driver in the selection list Standard IDE Controller Driver(for example, in the case of a SATA controller), you can simply remove the installed controller driver of the old motherboard. To do this, in Device Manager, right-click on the device and select from the context menu Delete. After uninstalling, turn off your computer.

Now produce motherboard replacement to a new one. Windows XP should boot without any problems. After that, all that remains is to install all the drivers on the new motherboard from the disk and that’s it!

Option 2 - booting with old motherboard is not possible (Windows XP)

Second option replacing the motherboard without reinstalling Windows XP longer than the first and should be used if a computer with an old motherboard does not turn on or booting is impossible. We will need a Windows XP installation disk. If there is no disk, you can download a disk image (WinXP Professional SP3 with an integrated package of hard disk controller drivers) and burn it to a CD-R, for example, using the DeepBurner 1.9 program (the distribution kit can be downloaded for free).

For restoring Windows XP after replacing the motherboard you need to do the following:

Install the new motherboard and connect all devices.

Start booting from the Windows XP installation disc. On the first installation screen (image below), press ENTER to begin installing Windows XP.

On the next screen, press F8 to accept the license agreement.

The installer will then search for installed operating systems and display a list of them.

Select the operating system to restore and click the button R. The further process is not much different from a normal Windows XP installation. The differences are that the installer will not ask which partition of the hard drive to install the OS on and will not prompt you to enter your computer name and username. Be prepared to enter the Windows XP license code and activate it after installation via the Internet.

After the installation is complete, you need to install all the drivers on the new motherboard. All programs, user files and operating system settings will remain the same.

Option 3 - Fixing the IDE Controller Driver in the Registry (Windows 7)

If you replace the motherboard without reinstalling Windows 7, things are a little more complicated. The previous 2 options do not work. It will also not be possible to restore Windows 7 by updating it from the installation disk, since this function can only be launched from an already loaded OS.

But don't be upset! ERD Commander will help us (download a CD image, or make a bootable USB flash drive ERD Commander). With its help, we will make adjustments to the Windows 7 registry necessary to boot on the new controller.

Let's get started! We boot from a burned disk or flash drive. In the download menu, select the version of ERD Commander 6.5 for Windows 7.

Selecting the ERD Commander version to download

To the question "Initialize a network connection in the background?" we answer No.

We answer the question “Reassign drive letters...” Yes.

Select the keyboard layout and press the button Further. Then select our operating system from the list and click Further.

Selecting the operating system to which ERD Commander will be connected

failed, the search for boot problems will begin.

Finding problems booting Windows 7

Click Cancel, so as not to waste time, since this startup recovery tool will not help if the motherboard is changed. To the question "Stop troubleshooting?" we answer Yes. The next message that the problem could not be resolved, do not be alarmed and press the button Ready.

In the window that appears, select the item Microsoft Diagnostics and Recovery Toolset.

Now launch the registry editor.

First of all, you need to delete the registry branch HKLM\SYSTEM\MountedDevices

Now you need to enable the launch of services that load standard drivers for IDE and SATA controllers.

Opening a thread HKLM\SYSTEM\CurrentControlSet\services on the left side of the Registry Editor. Now check the following sections in this thread: amdide, amdsata, amdxata, atapi, intelide, msahci, pciide. Parameter Start everyone should have equal 0x00000000 (0). The value Start=0 - starts the service when Windows boots. If it is equal to 0x00000003 (3) double-click on the parameter name (Start) and change the value to 0 (picture below) and click OK.

After start will be set to 0 for all of the above registry keys, close the registry editor and restart the computer in normal mode. In most cases, this is enough to successfully boot Windows 7. Now you need to install drivers on the new motherboard.

If it doesn't help

If the above steps did not help and Windows 7 still does not load and displays the error STOP 0x0000007b, then the required controller driver is not loading. Let's try to enable the loading of all drivers known to the operating system.

To do this, set the parameter value Start equal to 0 in the following services: adp94xx, adpahci, adpu320, aic78xx, amdsbs, arc, arcsas, elxstor, HpSAMD, iaStorV, iirsp, LSI_FC, LSI_SAS, LSI_SAS2, LSI_SCSI, megasas, MegaSR, nfrd960, nvraid, nvstor, ql2300, ql40xx, SiSRaid2, SiSRaid4, vhdmp, vsmraid, alide, cmdide, nvraid, viaide .

Reboot the computer in normal mode. The OS should boot.

Booting Windows XP can also be restored in a similar way, but everything is more complicated there and I will not describe it in this article. Those who are interested can read it.

This guide is intended for users who would like to replace the motherboard on their computers without reinstalling the system. In particular, this article may be useful to you if:

• you are going to upgrade your motherboard, but want to keep your current Windows installation along with settings and programs without reinstalling them from the very beginning;
• You want to switch the SATA controller mode from IDE to AHCI or RAID (or vice versa) to achieve better disk subsystem performance.

If one of the above scenarios applies to you, then you should know that regardless of your goal - replacing the motherboard or switching the SATA controller to a different mode - the result will be the same: Blue Screen of Death (BSOD) error STOP 0x0000007B INACCESSABLE_BOOT_DEVICE when loading the operating system.

The cause of this unfortunate incident is Windows' inability to find the proper drivers for the SATA controller. Fortunately, there is a workaround to the problem, thereby avoiding having to reinstall Windows. To do this, you just need to “tell” the operating system to use the standard SATA controller driver at startup, and .

To make the appropriate changes in the Windows registry, simply follow the instructions below.

Before we begin, please review the information in the two points below, as one of them will determine your plan of action:

1. The motherboard has not yet been replaced, so Windows boots normally. In this case, you need to make changes to the registry in a normal Windows operating environment and only then proceed to update the motherboard.

2. The operating system does not boot because you have already installed a different motherboard, or because you changed the SATA mode in the BIOS. In this case, you will have to use the offline registry editor.

Changing the registry before upgrading the motherboard (Windows boots normally)

These instructions are only for those who have Windows running normally because the motherboard has not yet been replaced. If you already have another board and Windows does not boot, then follow the instructions in the next section of the article.

So, turn on your computer normally and then open the Windows Registry Editor. To do this, press +R, type regedit, press Enter.

Inside the registry, follow this path (in the left pane of the window):

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci

In the right pane of the window, double-click on the parameter Start and change its value to 0 (zero). Then click OK.

Now do the same in the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\pciide

If you are using RAID (otherwise skip this step), then you need to do the same modification in this section:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\iaStorV

That's all. Your machine is now ready for the update. Turn off your computer, install the new motherboard and connect all the necessary components to it. Then start the system, enter the BIOS and set the ATA mode (IDE-ATA, AHCI or RAID) or leave the default value. Windows should start without problems. When the operating system finishes installing the controller driver, continue installing drivers for the remaining devices on the new motherboard.

Windows won't boot: Changing the registry using the offline editor

Use this instruction if the operating system will not boot because you have already replaced the motherboard, or changed the SATA controller mode in the BIOS.

In this case, you need to use the offline registry editor. To solve this problem, I prefer to use a recovery environment, which can be accessed, for example, using an operating system installation disk.

To open the Registry Editor using the installation DVD or USB drive, follow these steps:

Boot your computer using the installation disc. You may need to select DVD/CD or USB as the first boot device in BIOS settings. For this:

• turn on the computer and press the DEL or F1 or F2 or F10 key to enter the BIOS (the BIOS entry key depends on the computer manufacturer);
• inside the BIOS menu, find the Boot Order option (this option is usually located inside the Advanced BIOS Features menu);
• In Boot Order, select CD/DVDRW or USB (depending on what type of media the Windows installation files are on) as the first boot device. Save your changes and restart your computer by pressing F10.

After rebooting, the computer will begin booting from the installation disk.

After loading, on the very first screen, click “Next” and then select “System Restore”.

If you have Windows 7, in the recovery options window, click Next, and on the next screen, launch Command Prompt.

If you are using Windows 8.x or Windows 10, then you need to go to Diagnostics -> Advanced Options -> Command Prompt.

At the command prompt, enter regedit and press Enter.

In the registry editor, select the branch HKEY_LOCAL_MACHINE, and from the File menu, click Load Hive.

Open the drive on which the operating system is installed.

Go to the Windows\system32\config directory, select the file system and click "Open".

Enter a name for the section (for example, Offline) and click OK.

By expanding the HKEY_LOCAL_MACHINE branch, you will see the created section (in our example it is called Offline).

Expand the new section and go to the following subsection:

HKEY_LOCAL_MACHINE\Offline\ControlSet001\services\msahci

Open the parameter Start, change its value to 0 (zero), click OK.

Perform the same operation in a subkey:

HKEY_LOCAL_MACHINE\Offline\ControlSet001\services\pciide

If you are using RAID (otherwise skip this step), do the same here:

HKEY_LOCAL_MACHINE\Offline\ControlSet001\services\iaStorV

Close Registry Editor, Command Prompt, and restart your computer. Remove the installation disc so that the operating system can boot normally. Windows should now start without any problems and then install the necessary hard drive controller drivers.

That's all!

Have a great day!

An unpleasant situation when the computer does not turn on after pressing the Power button can happen to any user.

There may be various reasons for this system behavior. But don’t panic, many of them can be eliminated on your own or by contacting specialists.

Causes and solutions

If, when you turn on the computer, it does not show signs of life, does not start or the operating system does not load, in general, the reasons for this can be very different.

Let's look at the most common problems that lead to the inability to turn on the computer:

• power problems;
• power supply failure;
• CMOS battery problems;
• problems with components;
• broken power button;
• motherboard malfunction.

Some of these problems can be easily diagnosed and fixed at home, while others will require a service visit. In any case, it would be a good idea to try to fix the problem yourself.

Problems with 220V

Very often, due to their carelessness, users encounter basic problems. First of all, don't panic ahead of time. First you need to look at what happened. If the fans do not spin and the indicators do not light up, then you need to check the presence of power.

You can check that electricity is supplied to your PC by following a few simple steps:

• make sure there is power in the outlet;
• check the connection of the surge protector to the outlet and its operation, for example, by connecting another device to it;
• Make sure that the power cord is connected correctly to the system unit and the outlet.

In the case where the problem cannot be resolved by simply checking the PC connection, then we look for the problem further.

The power supply is faulty

Problems turning on a PC quite often arise due to a faulty power supply. This problem occurs due to voltage surges, which are not uncommon in our networks.

Let's look at the main signs indicating a faulty power supply:

• When you press the power button, the computer does not respond at all;
• The lights come on, but nothing starts.

In any case, you can determine whether the power supply is to blame for the situation only by installing another one that is known to be good. In many cases, if this component fails, you will also have to replace the motherboard or send it for expensive repairs.

Video: What to do if it doesn’t turn on

Battery doesn't work

There is a small CR-2032 battery on the motherboard inside the system unit. It is responsible for storing the settings of the PC's basic I/O system. The battery life is quite long.

But in some cases it fails after a couple of years, and various problems appear with the clock and switching on. In this case, you just need to replace it.

Let's look at how battery discharge usually manifests itself.CMOS:

• the computer does not turn on at all;
• the start occurs after several presses of the power button;
• clock failures;
• PC randomly turns on when power is applied;
• reboot without user request.

In fact, the manifestations may vary slightly depending on the system configuration and other external factors. You can purchase the battery needed for replacement at computer, hardware and other stores.

Dust

A fairly common cause of problems with starting a computer is dustiness. A failure can manifest itself in different ways, from system stopping to random shutdown or inability to start.

The procedure for cleaning the system unit:

1. turn off the power and unplug all cords from the outlet;
2. open the cover of the system unit;
3. remove dust, for example, with a brush;
4. clean contacts of RAM, video card and other components;
5. check fans for jamming;
6. If necessary, perform preventive maintenance in the form of replacing thermal paste.

Problems with components

Failure of individual PC components may also make it impossible to start it. In this case, it is quite difficult to independently diagnose the problem at home. In some cases, signals generated when the system starts can help identify the problem.

In this case, you will need to know the BIOS manufacturer. In addition, a description of the signals sent when turned on can be found in the instructions for the motherboard. Most often, a squeak can indicate problems with RAM or video card.

You can fix the problem by replacing the components with serviceable ones, but before doing this, it is recommended to try cleaning the contacts using a regular school eraser. In some cases this method is very helpful.

Power button

The reason why the PC cannot be started from the button may lie in the switch itself. Simply put, it may not fully close the contacts. You can check the problem yourself by closing the corresponding pair of contacts on the motherboard using a screwdriver.

Attention! Closing contacts on their own is recommended only for those who are confident in their actions and have the necessary knowledge. For the rest, it is better to seek help from specialists.

Motherboard

You can determine the malfunction of the motherboard or system board yourself with high accuracy only by replacing all other components with serviceable ones. In rare cases, the signals supplied by the BIOS will help with diagnostics.

Most often, when such a problem occurs, the fans turn on and work, but there is no image output or other reaction of the PC to user actions. In most cases, it makes no sense to repair the motherboard, since the cost of the work may exceed the price of a new part in the store.

Note. Often, problems with the motherboard are mistakenly described as a malfunction; I turn on the computer, but the monitor does not turn on. There is confusion between problems with the monitor and lack of video signal. It is easy to check the operation of the monitor by disconnecting the signal cable from the system unit and looking for the presence of the manufacturer's splash screen.

The computer won't turn on

The computer may stop turning on for a huge number of reasons. But among them we can highlight the most common ones. Some of them can be fixed by the PC owner himself without contacting a service center, but first of all, it is necessary to establish the cause of the malfunction.

Let's look at the most common problems due to which the computer may not turn on:

• video card defect;
• problems after the processor;
• problems after cleaning;
• crashes after hibernation;
• Incorrect operation after replacing parts.

With video card

Video card problems are fairly easy to diagnose. First of all, when you turn on the computer, but the monitor does not turn on, the fans will mostly spin.

When installing a working video card, the image usually appears. Owners of motherboards with integrated video can also use it to check the functionality of the video adapter.

Most video cards fail due to poor cooling, for example, when the system unit is very dusty or the cooler is broken. Therefore, during prevention, it is necessary to pay special attention to removing dust and checking the fan on the video card.

After replacing the processor

After replacing the processor, users often encounter the inability to turn on the computer. This problem is usually easy to fix.

Let's look at the basic steps that need to be taken if the PC stops turning on after replacing the processor:

1. check the compatibility of the motherboard and the new processor;
2. reset BIOS settings;
3. clean contacts;
4. make sure that all components are installed correctly.

Advice . Additionally, signals emitted by the system speaker can help with diagnostics.

After a power surge

As a result of a power surge, many PC components can fail. As a preventative measure, it is recommended to connect the computer to the power supply using high-quality stabilizers.

Components that fail most often during power surges:

• power unit;

It is worth noting that several components may be damaged at once and not necessarily those from the list above.

After cleaning

Many users, having decided to clean the system unit from dust for the first time, are faced with the inability to start the PC after reassembly. In this case, there may be quite simple reasons or components may fail.

Actions to be taken if the PC does not start after cleaning:

• check cable connections;
• make sure that the power supply connectors are correctly and tightly connected to the motherboard;
• check the installation of RAM and video card;
• if the cooling system was removed, then you need to make sure that it is installed correctly and that there is a sufficient amount of thermal paste;
• make sure that other boards and devices (hard drive, drive, etc.) are connected correctly;
• reset the BIOS settings using a jumper or by removing the battery for a few minutes.

After hibernation

Hibernation mode is designed primarily to reduce laptop power consumption and increase battery life. When you turn off the PC using this method, all data is saved on the hard drive. Some systems may not turn on after entering this mode.

You can start the computer by unplugging the power supply for a few minutes and turning it on again. In this case, the operating system may stop starting. You'll have to use system restore.

After replacing the motherboard

Some PC owners are forced to replace the motherboard due to the fact that the old one has failed. In this case, it is important to make sure that the new board is compatible with other components, and also to perform the installation correctly. But even in this case, problems may arise.

Let's consider the basic steps if the computer does not start after replacing the motherboard:

• check the connection of the power supply and installation of additional boards;
• temporarily disconnect the hard drive and other external devices without which starting is possible;
• make sure the RAM is installed correctly, clean the contacts on the modules;
• try starting the board without installed RAM and video card and check for signals through the speaker;
• Replace the power supply, RAM, video card, and processor in sequence with a known working one.

If the PC still does not start after all these steps, then it is recommended to contact the service to check the functionality of the motherboard.

After update

During the installation of some updates, the operation of the operating system may be disrupted and as a result the PC stops starting. To solve this you will have to use System Restore.

Run System Restore inWindows 7:

After this, the system will try to fix startup problems on its own. If problems persist, you can try reinstalling Windows.

When replacing RAM

Problems after replacing RAM are quite rare. First, make sure you have selected compatible modules.

Let's look at the steps that need to be taken if the PC stops starting after replacing the RAM:

• check that the module is installed correctly;
• try to start the system using only one module;
• clean contacts;
• Perform a test run of the system with a known good module.

The computer turns on, but

In some cases, the computer turns on, the fans start, but the operating system does not load or there is no image on the screen. There are many reasons for this computer behavior.

Is not downloading

If the computer turns on, but Windows does not load, then you need to look for the problem there. This behavior occurs when an update fails, programs are installed incorrectly, or simply due to a malfunction.

You can try to fix the problem with loading the operating system in the following ways:

1. start the computer in safe mode and try to roll back to one of the previous restore points;
2. use OS recovery tools;
3. scan for viruses using special boot disks;
   • check connecting cords;
   • make sure the monitor is working by disconnecting it from the system unit;
   • clean the video card contacts and check the operation of the cooler;
   • try using another external or integrated video adapter.

   There are a large number of problems due to which the computer does not turn on or does not start the operating system. You can try to eliminate many of them yourself using the tips from this article. If nothing helps, then you will have to seek help from specialists.

Despite all the Plug-And-Play claims of modern Windows operating systems, replacing the motherboard can lead to a blue screen and complete computer inoperability. This article is addressed to those who have decided to update the hardware of their computer and describes the procedure for replacing the motherboard without problems.

During the times of total dominance of Windows XP, when replacing the motherboard in the device manager, it was enough to remove the main hard drive controller (sometimes additionally the USB controller), or replace its drivers with a standard controller.

After which the hard drive could be connected to the new motherboard and the computer would boot smoothly.
With the advent of Windows 7 and Windows 8 (8.1), the above actions are often not enough. That is, after connecting the hard drive to the new motherboard, the computer does not start. But fortunately, the Windows 7 operating system includes the Sysprep utility, which allows you to “untie” the installed operating system from a specific hardware. Using this utility, all unique information about the installed system is cleared. This includes clearing information about installed drivers. In this case, the user’s programs and settings are not affected and remain “as is”.
ATTENTION!!! The utility should be used before connecting the hard drive to the new motherboard. That is, on an old computer even before replacing the motherboard. All actions are at your own peril and risk.

How to prepare your computer for replacing the motherboard

We launch the utility: to do this, press the “Win ​​+ R” keys on the keyboard simultaneously and enter the command: c:windowssystem32sysprepsysprep.exe, click “OK”.


In the window that appears, configure everything according to the figure below, namely “Actions to clean up the system”, select the option “Go to the system welcome window (OOBE)” and check the box “Preparation for use. In "Shutdown Options" select "Shutdown".

Click “Ok”.
The process of clearing the system of information about the “old hardware” will begin, after which the computer will turn off. Now the hard drive can be connected to the new motherboard.
That's all.

First launch of the operating system on a new motherboard

When you first boot, Windows will install device drivers and ask you to specify regional settings. Everything will look as if you just reinstalled the operating system.

After this, you must specify your username. I recommend creating a new user, which definitely wasn't there before before replacing the motherboard. This should be done to ensure that the settings of existing profiles are not lost. Later, after the transfer is complete, when you have configured everything, this temporary user can be deleted. Don't forget to also delete his personal folder in the Users directory.

As you can see, everything is simple. The only BUT is that Windows activation will fail. And you will have to activate the operating system again.

P.S.

All the actions described in this article were carried out by me when replacing the motherboard in the computer. AsRock G31M-GS per model Asus P8H61-M LX3. The operating system used was Windows 7 32 bit.
This instruction will not help if the installation of a new motherboard is forced due to the fact that the previous one has failed. The article describes an action algorithm for a situation where you can start a computer on an old motherboard.

The motherboard has this name for the reason that it is through it that all other parts of the computer are connected. It is not surprising that if it fails, the operation of the machine becomes impossible.

To restore your computer's functionality, you need to know Why is your motherboard not working? The interested reader will find a lot of useful information that can help in the proposed material.

Main types of faults and methods for identifying them

Not a single mechanism breaks or fails just like that. Any malfunction has its own reasons, and the ability to independently identify them will save you a lot of time and nerve cells. Considering the technical complexity of the product in question and the presence of a huge number of working elements, the failure scenario and further methods for solving the problem differ in each individual case.

For simplicity, our service invites the reader to classify a specific problem according to the prerequisites for its occurrence in order to identify the reasons why motherboard won't start, with maximum accuracy and without unnecessary movements. In most cases, malfunctions occur due to the factors described below.

Problems appearing after replacing hardware

Many owners of desktop computers like to supplement and upgrade it themselves (which is very simple due to the block design of the power supply). Install a powerful video card to play the latest games with huge system requirements; add more RAM for working with professional graphic editors and samplers; introduce a super-powerful processor to increase performance - all this is well known to those who want to squeeze the maximum out of their hardware.

If your computer fails after one of these upgrades, most likely you have simply exceeded the limit of its capabilities. Unfortunately, each specific model has its own ceiling - and the more powerful the devices installed in the system unit, the more energy they consume.

Most likely, the last part installed exceeded the maximum permissible power limit. Reverse replacement (downgrade) in most cases solves the problem. It’s worse if some time has passed since the installation of the new hardware - the contacts on the board, which was working at the limit of its capabilities, could simply burn out, which will require complex diagnostics.

Failure due to power surges

Voltage surges and emergency power outages are a common occurrence in most regions of the country. It’s especially scary when, after an emergency shutdown, repairmen supply a voltage of 380 volts to the household network - fuses, circuit breakers and panels spark and burn like sparklers. And, worst of all, they don’t always save the equipment.

Sudden surges and voltage drops can lead to a lot of unpleasant consequences - in the form of burned out and short-circuited transistors on the motherboard. Disassembling the system unit with removal and step-by-step testing of the tracks with a voltmeter is the surest way to find the cause of the malfunction.

Lack of performance without logically explainable reasons

An old desktop computer can work like a charm for several years - although it will not impress the owner with outstanding performance characteristics for its time. Then it stops loading even the BIOS, without any first alarm signals that could inform the owner in advance about the imminent failure of the hardware.

Wear of individual components of the unit in question is one of the most common risk factors. Only a total diagnosis performed by a person who understands the meaning of the manipulations will help here.

Repair procedure

It is extremely difficult for an unprepared person to understand why motherboard won't start, and it is even more difficult to understand the intricacies of solving this problem. Arm yourself with a set of screwdrivers and a voltmeter - the information below will help you quickly find the root cause of the trouble and save on repairs.

Deductive method

First of all, you need to make sure that the actual reason for the malfunction is a problem with the board itself. To do this, a personal computer user will need to do two relatively simple things.

The first is to remove the side panel of the system unit and remove the motherboard. It must first be disconnected from the network. After disconnecting the element under test, reconnect the unit to the network and press the power button. If the coolers are working, then the problem really lies in the board.

Second, place the board on an insulated surface and connect it to the power supply. One of the LEDs, indicating the presence of standby voltage, should light up automatically. The absence of a reaction from any light indicators will give you the opportunity to automatically cut off possible problems with lost BIOS settings - then a voltmeter will be used.
If the computer stops working after updating the hardware, visually inspect the unit for signs of overheating after removing dust from the surface. If they are missing, try replacing the recently installed unit with a previously functioning one; In most cases, it solves the problem.

Are you experiencing problems with your BIOS? A simple reset of its settings to factory values ​​will help. The main question is how to do this without having software access to launch the BIOS using a computer.

Fortunately, the ability to manually reboot it is provided by the board’s functionality. What do you need to do to manually reboot the BIOS?

• It is necessary to turn off the power to the system unit and remove its side cover. Carefully remove a layer of dust from the motherboard and look for the inscription CMOS on it.
• Nearby you will find a remarkable silver battery, recessed into a special socket. Try to remove it as carefully as possible - and just as carefully insert it back after fifteen minutes. This measure will automatically reset the settings
• If you doubt the ability to carefully remove the battery, try to find a small jumper that looks like a noticeable red cap placed on two long vertical contacts. The third contact is located nearby. Remove the jumper and place it on the middle terminal and the one that was exposed. Wait fifteen minutes and return the jumper to its original position. The effect is similar to removing the battery.

Please note: this method only helps if the product is fully operational (or has no critical breakdowns). If there is no voltage supply, there are short circuits and damage to the circuits, all the manipulations described above will not have any effect.

Self-diagnosis

The problem is not exceeding the maximum power or incorrect BIOS settings? This means that there are purely technical problems.

First of all, unplug the board and carefully clean it of dust. It is advisable to do this with dry wipes in a clean workplace, wearing rubber gloves on your hands. Blowing chips with a hairdryer or cleaning with a vacuum cleaner is a frankly unwise decision.

It is highly recommended to have a magnifying glass on hand and perform a visual inspection in a bright light - this will reduce the likelihood of missing significant damage. Pay attention to the presence of scratches, chips and dark spots dangerously close to the circuits.
No damage found? Consider the capacitors - they look like small barrels, somewhat similar to AA batteries. They break down most often on older motherboards. The presence of drips, swelling and oxides indicates the need to replace damaged or exhausted capacitors - they must be carefully removed using a soldering iron, and similar new ones installed, just as carefully soldering them to the vacant spaces.

Pay attention to the plus and minus marked on the board at the location where the removed product is attached. When replacing a capacitor, it is necessary to observe the polarity - otherwise a miracle will not happen and the computer will not work.

Using a voltmeter, ring the transistors - small rectangular objects that are present in large numbers on the product being repaired. If there is a short circuit, the built-in protection system simply will not allow it to start. Identify all sources of faults and carefully rewrite the markings of all short-circuited elements. To replace them, the user will need a soldering iron and some free time (and, of course, new transistors that are completely identical to the failed ones).

Unfortunately, the proposed solution methods do not help in all cases. . Self-repair in such a situation is practically impossible even with the hands of an advanced user who understands hardware. If you have checked and corrected everything that was possible, but the result was disappointing, it is better to take the faulty element to a service center.

If you don’t feel confident that you can handle the repairs yourself, it’s better not to try. The motherboard requires extremely delicate handling - a careless attempt at self-service can lead to even more serious damage. Take on this matter personally only if you are completely confident in your skills in handling the tools necessary for diagnosis and repair; Otherwise, leave it to the professionals.