BIOS does not start: the main causes of the problem. The BIOS does not start: what to do and how to “revive” the microsystem Problems with bios

Oh, guess the riddle: standing there, the hive is buzzing. But there is no smoke coming out of the chimney, because this is not a native factory, but a computer on which the BIOS is damaged. And he hums because that’s all he can do now. Without the BIOS, it's just a bunch of lifeless hardware. Is this worth worrying about? Of course not. After all, now you have a great bedside table!

System unit as a bedside table? Well, no! We know how to make it work. Today we’ll talk about how to restore the BIOS if it crashes.

What causes the BIOS firmware to crash?

There are not too many reasons for BIOS damage; in some cases they are obvious, in others they are not. Here is a list of the most common:

• During this time, the computer's power supply was cut off.
• The flasher program does not interact correctly with the firmware or flash memory chip.
• A BIOS version has been flashed that is not suitable for this motherboard. Yes, .
• If the update is carried out from a running operating system, there is a system failure or software interference, for example, blocking by an antivirus.
• Incorrect user actions, for example, restarting the computer before the update installation is completed.
• Failure of the flash memory chip.
• Hidden BIOS firmware errors. Sometimes this explains spontaneous “gatherings” that occur for no apparent reason.
• Electrical problems with the motherboard.

How BIOS damage manifests itself

• When you press the PC power button, only the cooler is turned on, which immediately begins to rotate at maximum speed. Sometimes the LED indicators on the case and keyboard light up.
• One or several seconds after switching on, a cyclic reboot begins. Outwardly, this is manifested by a cycle of spinning up and stopping the cooler, which is repeated as long as power is supplied.
• When turned on, the power indicator lights up, the cooler does not spin.
• The computer shows no signs of life. This happens when the boot block, the BIOS bootloader, is damaged. This is the most difficult case.

There is no image on the screen. Even the manufacturer's screensaver does not appear.

There are also other forms of damage to the BIOS, more precisely, to its area that stores the configuration of the ME controller (an integral part of the chipset) on boards that work with Intel processors - the so-called ME region. If there is a problem in this area, the computer or laptop may:

• It won't load correctly or won't turn on at all.
• Shut down or restart at regular intervals.
• It is incorrect to regulate the rotation speed of the cooler, for example, turning it at high speeds regardless of the load.

Eliminating such failures involves reading a BIOS dump, replacing the ME region with a clean one, and re-flashing it using a programmer. Since this is usually done by repairmen, and not by computer owners, we will not dwell on this. It’s better to do what can be done at home without special equipment and the risk of finally sending your “iron pet” to the kingdom of eternity.

Restoring the BIOS without a programmer is only possible if you save the bootloader. It is sometimes possible to determine whether it has been preserved or not by indirect signs: blinking of the screen backlight, sound signals from the system speaker, the reaction of the motherboard to turning on without RAM (with sound or blinking indicators), etc. If the BIOS bootloader is intact, the first moments of operation computers run fine, the failure appears a little later.

How to restore functionality to a motherboard with a crashed BIOS

Asus

After downloading the firmware you need to rename it. For example, the file “Sabertooth X79” (model name) is renamed to “SABERX79.ROM”, the file “Sabertooth Z77” is renamed to “Z77ST.CAP”. Information on what the firmware file for your model should be named is most likely on the Asus website, but if you don’t find it, check on the forums or in support.

Next, save the renamed BIOS on a flash drive formatted in FAT32 and connect it to the USB port marked “ Flashback" or " ROG Connect" It is advisable to turn off the computer before this, this will increase the chance of successful recovery.

After connecting the flash drive, turn on the PC and press the “ BIOS" Hold it down for about 3 seconds until the indicator light on the board starts flashing. Blinking indicates that the file has been successfully read and is being flashed into memory. When the firmware process is completed, the indicator will turn off.

If your board is from the budget segment or is not very new, that is, it does not support USB Flashback, most likely you can restore it in another way. If your computer has a floppy drive or optical drive, write the renamed BIOS file to the root directory of a blank floppy disk or CD, place it in the drive, turn off and then turn on the PC. The firmware will be completed when the drive indicator goes off. If there is no drive, use a flash drive.

Gigabyte

Problems with starting a board with Dual_BIOS are possible in the following cases:

• The main chip is missing or faulty.
• The microcode in the main chip is completely erased.
• The contents of both microcircuits are damaged.

Some Gigabyte motherboards can boot from backup flash memory and use it as the main one. Another group of boards from this manufacturer uses a dedicated area on the hard drive as BIOS backup media. This is a less reliable option, but still better than nothing.

Restoring the Gigabyte BIOS from a backup is usually performed automatically, but if this does not happen, try turning off the computer from the outlet, wait a little and turn it on again.

MSI and others

On motherboards from MSI and some other brands that are more than 8-10 years old, flashing the BIOS is done from a floppy disk. The instructions for AWARD and AMI BIOS are slightly different.

To restore the AMI BIOS, do the following:

• Rename the BIOS file downloaded from the motherboard manufacturer's website to AMIBOOT.ROM.
• Transfer it to the root of a blank floppy disk. Insert the floppy disk into the drive of the switched off PC.
• Press left Ctrl + Home on your keyboard and turn on your computer.

To restore AWARD BIOS:

• Place the firmware and BIOS files on a floppy disk (usually downloaded in one archive).
• Create a text document on a floppy disk that specifies the name of the BIOS file with the bin extension. Rename the document to autoexec.bat.
• Further actions are similar to those above.

By the way, some motherboard manufacturers post BIOSes on their websites only in exe format - in “one bottle” with a firmware program for updating from Windows. Sometimes such a file can be unpacked as an archive, but users often do not understand which of its contents is firmware. There is no universal solution for such problems. In order not to aggravate the problem, it is better to consult specialized forums or the manufacturer’s technical support.

On some boards, before restoring the BIOS, you also need to remove the real-time clock (RTC) battery from the socket or reset (remove) the CMOS clear jumper. It is important to clarify these points before starting the procedure.

Features of BIOS recovery on laptops

The method for restoring a crashed BIOS on laptops is approximately the same as on desktops. The firmware file and flashing program downloaded from the manufacturer’s website (the latter is not always needed) are placed on a clean flash drive formatted in FAT32/16, connected to a de-energized device (simply turning off the laptop is sometimes not enough, you need to disconnect the power supply and remove the battery), insert a charged place the battery in place, turn on the device and press the key combination. Different laptops use different keyboard shortcuts for this, for example:

• Ctrl (left only or both) + Home
• Windows + B (this and other letters are given in the Latin layout)
• Windows + F
• Windows+M
• Windows + Esc
• Fn+B
• Fn+F
• Fn+M
• Fn+Esc.

The main job is to unpack and rename the BIOS files. Again, there is no single rule here. In most cases, you have to get the firmware from exe files, but! Many manufacturers include BIOSes for different revisions of one platform or a whole series of platforms, and choosing the only necessary file from them can be very difficult. To avoid mistakes, read the instructions for flashing the firmware of your particular model and platform revision on specialized forums. And don't be shy to ask questions.

BIOS is the most important component of a computer, the activity of which is aimed at setting up the operation of the equipment, checking its functionality, launching the operating system, and more. One of the most unpleasant situations that a user may encounter is when the BIOS refuses to start.
Let's imagine a situation: suppose you decide to reinstall Windows on your computer, but in order to run the installation program, you need to enter the BIOS. You have made more than one attempt to enter the BIOS, and all of them were unsuccessful.

Another situation: when the computer starts, the user first sees the BIOS interface, after which the computer proceeds to load the operating system. In some cases, the user may not see any image at all, that is, neither the BIOS window nor anything else.

Reason 1: Wrong key (combination)

First of all, you should question the correct hotkey you are using to enter the BIOS. Unfortunately, you can only find out which key in your case is by experience, that is, it was not possible to enter the BIOS using one button, next time you should try another.

The process of entering the BIOS is as follows: you reboot the computer or simply turn it on and at the very first stage of turning it on, you begin to repeatedly and quickly press the BIOS hotkey.

There are a huge number of options for entering the BIOS (this is especially true for laptops), but in most cases you will find one of the following keys: F1, F2 and Del. If not a single key helps you enter the BIOS, try Googling the model of your motherboard (for a desktop PC) or laptop model on the Internet to find out how to enter the BIOS for your device.

Reason 2: Non-working or unsupported keyboard

And although in rare cases the user has the opportunity to enter the BIOS without a keyboard, in 95% of cases it is impossible to do without it.

Needless to say, a computer keyboard must be in good working order? Be sure to test the keyboard's functionality by logging into Windows or connecting it to another computer.

If everything is fine with the keyboard, then perhaps the problem is that the keyboard is not supported by the BIOS. As a rule, a similar problem is observed among users of old computers (laptops), and if you use a wired or USB keyboard, then this may well be the case.

If you have a wireless keyboard, then we will need to use a wired one to eliminate the possibility of such a problem. Especially older BIOS versions may not support the USB keyboard interface, but to check this, you will either need to connect an old keyboard with a PS/2 connector or purchase a PS/2 adapter for a USB keyboard.

Reason 3: USB port not working

The port to which the keyboard is connected must be working. Try connecting the keyboard to a different port and try entering the BIOS again.

Reason 4: conflicting devices

One of the computer devices may have malfunctioned, resulting in a conflict, which is why you cannot enter the BIOS.
Try disconnecting everything you can from the computer: drives, hard drives or solid-state drives, all USB devices connected to the motherboard, PCI cards. If there is a built-in video card, then disable the discrete one, and then try to enter the BIOS again. If the attempt is successful, connect one device to the computer at a time to find out what is conflicting. Having identified a problematic device, it is this device that you will need to deal with (it is better to take it to a service center for diagnostics).

Reason 5: Computer malfunction

If, when you turn on the computer, the BIOS starts making sounds, but does not want to start, you should listen to the signals and record them. Often the BIOS uses such signals to make it clear what went wrong. There are a lot of tables on the Internet that decipher sound signals for different BIOS versions, using which you can quickly understand the cause of the problem and begin to fix it.

Reason 6: Problematic BIOS settings

As a rule, a similar cause of the problem occurs when the user makes changes to the BIOS. In this case, you should try returning the BIOS to factory settings. As a rule, in most cases you will need to look under the system unit case, where on the motherboard you can find a special switch (CMOS jumper) that is set to position 1-2. To perform a reset, just move the switch to position 3-4 for 15-30 seconds, after which you can return it to its previous position.

Reason 7: Problems with the motherboard

The most unfortunate cause of the problem, since the motherboard is almost the entire computer. If you suspect a problem with its operation, you can carry out a short diagnostic procedure.

First of all, you will need to inspect the motherboard itself: is there any oxidation, are the capacitors swollen. Any external changes indicate its malfunction, which means that all this must be eliminated. If there is oxidation, it must be carefully erased with an eraser. If the capacitors are swollen, they should be soldered with new ones.

If visually everything is fine with the motherboard, you should try the following:

1. Disconnect your computer from the network, and also remove all unnecessary devices: mouse, speakers, keyboard, any additional devices and cables. As a result, only a network cable and a monitor need to be connected to the system unit.
2. Reset CMOS. To do this, you should remove the battery from the motherboard for a few seconds and then install it back.
3. Remove all cards from all motherboard slots, leaving only the processor and speaker connected.
4. Start the computer and pay attention to the sound: if there is any sound, this tells you that the motherboard is working. If not, then everything is much sadder - she does not respond.

If you have confirmed your guess that the problem is in the operation of the motherboard, you should try to take it to a service center - it is quite possible that a specialist will be able to restore its functionality.

These are the main reasons that affect the BIOS not starting. If you have comments on the article, leave them in the comments.

BIOS is a program that is responsible for the initial startup of the operating system as soon as the personal computer is turned on. Its name stands for "basic input/output system". What is BIOS in a computer? Why is it needed and what functions does it perform?

Its main task is to find faults. This is done by testing the device. If everything went well, then the operating system loader is searched for and then launched.

Now that we have figured out what a BIOS is in a computer and what it is responsible for, we can move on to the question of the reasons for boot failure.

Signs of errors

You may be concerned about a system malfunction when one of the following events occurs when you start your computer:

• when the power button is activated there is no reaction (it is also worth checking how it is connected);
• the computer starts, but the screen does not react at all, and the BIOS itself produces error signals;
• When the device starts, an error message appears; keyboard buttons do not respond;
• the computer starts without errors, but too quickly; without the ability to load the BIOS.

Key input error

The first thing worth noting is that the hotkeys for launching the program are different on each motherboard. And sometimes, the combination required to launch the BIOS may not be displayed at all on the screen when the device starts. This makes the task much more difficult. Therefore, to select the necessary key combinations to enter the BIOS, you will have to choose from:

• Del (on some keyboards - Delete).

If none of them fit, you should search the Internet for the motherboard model. Most often, this characteristic can be found in the description on the manufacturer’s website or on various thematic forums.

Port problem

This may be the simplest reason why the BIOS does not load. The problem may be that the USB port to which the keyboard was connected has stopped working correctly, and, consequently, the device itself has stopped responding to any interaction with it.

The solution is extremely simple and obvious - change the keyboard connection port to one that works reliably. If we are talking about a desktop computer, you should use the USB located on the motherboard. Unlike those installed in the case, they work longer and more stable.

Now you can restart the computer and load the BIOS again.

Input device problem or error

Before you start working with this program, you should definitely make sure that the input device is working. And it doesn’t matter whether it is necessary to check some data on the system or install new BIOS firmware (this will be discussed a little later). If suddenly nothing happens when you press the correct key, you should perform several actions:

• check the functionality of the USB ports (described above);
• make sure that the keyboard itself, as well as the necessary keys, work stably.

There are also various ways to enter the BIOS without a keyboard. It is also worth noting that it is not advisable to use a wireless keyboard when working with the BIOS. Only if there is no wired device, although this is not so critical.

There are situations when the BIOS firmware is too old and does not support the USB interface for the input device. To fix this you will have to use a keyboard with a PS/2 connector. You can also purchase a corresponding adapter for a modern port.

Errors in working with devices

In this particular case, the problem is that one of the devices connected to the computer does not work correctly and leads to errors. Because of the latter, the BIOS does not load.

To check for startup errors, you should perform the following steps:

• disconnect all drives, solid state drives and hard drives;
• remove all devices connected to the motherboard;
• disable discrete video card.

If the problem is solved, you should start connecting all devices one by one. This will help determine why the BIOS does not load. Once the faulty part is identified, you can contact a repair service to find out whether it can be fixed or not.

Audio prompts

The following often happens: the computer starts up, the BIOS is called, but signals are emitted instead, and the program does not work. In this case, you need to record the type of signal and turn to the Internet for help.

There you can find tables that provide a list of all the signals that the system can emit in such a situation. Next, you just need to find your signals among the others and find out what problem they indicate and how else to solve it.

Problem with program settings

A similar error occurs when the device user makes any changes to the BIOS itself. One solution to the problem may be to return the program to factory settings. You can do this as follows:

• Open the system unit or unscrew the bottom cover of the laptop.
• Find the CMOS button on the motherboard (located next to the battery). By default it is in position 1-2.
• Switch it to position 3-4. Hold this for about 30 seconds.
• Return to previous state.

Motherboard errors

This part is the most important part in any device. In essence, she is a computer. If there are suspicions that the BIOS does not load precisely because of it, it is worth performing several important operations:

• Inspect the motherboard. Various physical damage may appear on it. It is also worth checking it for oxidation and changes in capacitors.
• If no changes in the structure of the part were found, it is necessary to carry out diagnostics. To do this, all devices that were connected to it are turned off. You only need to leave the processor and speakers to control audio signals. Connect only the monitor and the power cable from the system to the system unit.
• Now you need to reset the settings. To do this, you need to remove the battery. After about 10 seconds, insert it into its original place.
• You can start the device. If sound signals appear, the motherboard is functioning. Otherwise, you should think about replacing.

If such an important part breaks down, you should contact a service center. Perhaps it can be brought back into working order.

Is it possible to update the BIOS from a flash drive?

The BIOS installation procedure itself is necessary when the computer has an outdated version that requires updating. The reason may also be a conflict in the connected device or the system data has been damaged by a virus.

Now let's look at the algorithm of how to update the BIOS from a flash drive.

Determining the board model

It is worth noting that this is not so much a BIOS update as it is the installation of new drivers on the motherboard. You can define a model in the following ways:

• if an expensive and professional part was purchased, then its full name will be indicated on the packaging, as well as in the accompanying instructions;
• the same applies to boards in the mid-price category; their type is indicated on the front side of the box;
• If the part came in a simple cardboard package or was installed in advance, you should turn to software:
• to find out the motherboard model and BIOS version on Windows 10, open the “Run” command window by pressing the Win and R keys;
• enter "msinfo32" in the line;
• click "OK";
• in the window that appears, find the line that will indicate information about the system, as well as the BIOS version.

You can also use the "AIDA64 Extreme" program. It is paid, but has a trial period of 30 days. Is it possible to find out the board model using it? by going to the "Summary information" section. It will be in the list on the left. After this, you need to select the item with information about the system board.

Where can I get the firmware?

To update an outdated BIOS version on Windows 10, you must follow the following sequence:

• enter the model of the mother card in the search engine and go to the manufacturer’s resource;
• find the downloads section and select the required software;
• in the new section, select the latest firmware that is marked “Instant Flash”; download;
• Unzip the downloaded file onto a formatted flash drive;
• insert it into the device that requires reinstallation and restart it.

The process of installing BIOS from a flash drive

Now you need to carefully follow the further algorithm of actions in order to install the new firmware without any problems:

• As soon as the computer starts up, click the BIOS activation button. These can be (F1, F2, Del (Delete)).
• Now you need to go to the "Instant Flash" section. The firmware version and the source of its storage (flash drive) will be recognized by the system automatically.
• Next, select the drive with the recorded BIOS source, as well as the firmware file itself.
• Press the enter key and wait for the program to install.

It is also worth noting that sometimes it becomes necessary to boot from a drive containing the installer. To do this, you need:

• When the device starts, press the keys to activate the BIOS;
• find the BOOT tab;
• find Boot Device Priority in it; This menu sets the priority when loading devices connected to the computer. According to the standard, the hard drive on which the operating system is installed always comes first;
• Now you need to highlight this line;
• then the flash drive with the installed file is selected and the enter button is activated;
• Now you need to press the F10 key and leave the program menu, while saving the settings.
• after the computer reboots, the installer recorded on the USB flash drive will be launched.

Important points

There are several rather serious comments regarding working with BIOS program parameters. They are given below:

• It is not advisable to reinstall if the computer is stable. There is always a risk of harming the system, and therefore you should not resort to such serious actions if you are not sure that you can do everything correctly. Or that it is really necessary.
• When downloading BIOS firmware, you need to pay attention only to the full versions, and not alpha or beta.
• During installation or error correction, you must not disconnect the computer from power. Otherwise, irreparable problems may arise. It is also worth getting an uninterruptible power supply.
• Before installing a new version of the program, read the instructions for updating the motherboard firmware. Often it comes complete with the part.

It is worth noting that BIOS failure is not a common occurrence. But it still happens and it’s worth knowing what to do when it happens to us. In the article we will not consider serious service techniques with removing chips and the like - we will leave this work to professionals, believe me, such things will cost less and faster in service. We will look at the software part, which is available to any user without a programmer. In 80% of cases, this will bring your BIOS to life.

What is BIOS

The word “BIOS” (Basic Input Output System) itself is translated as “basic input/output system”. This is a microcircuit on the system board into which a limited basic list of parameters and commands is “hardwired”, from which we can select the parameters that are most suitable for us. It is worth noting that on boards since 2012 you can more often find BIOS DUAL - in this type, the BIOS contains two chips, one of which is the main one, and the second is used for recovery.

On modern motherboards, the process of flashing the BIOS boils down to the fact that the BIOS firmware image is written to the CMOS chip on the board. " CMOS" - the name of the technology itself by which this microcircuit is produced: " Complementary Metal-Oxide-Semiconductor» — complementary metal oxide semiconductor or " CMOS" CMOS, as a rule, is a flash memory in which microcode is written and where all settings are stored.

It is the BIOS that transmits all the data required by the operating system for startup and installation. Without him there is no way...

Consequences of a BIOS failure

The consequences may be different:

1. I can’t enter the BIOS settings; when I go, I get to a black screen;
2. We can’t call the boot menu; when we call it, we get to a black screen;
3. When calling up settings or the BOOT menu, there are unclear colored dots on the screen;
4. It is not possible to start booting from a flash drive or not all bootable flash drives start. In my case, the Linux installation flash drive started, but the Mac OS boot did not want to start. Be sure to check the functionality of the bootable flash drive on another computer;
5. Does not detect USB;
6. Doesn't see CD ROM;
7. Changes are not saved after reboot;
8. Settings are not reset to default (Optimal);

These are the main signs of a BIOS failure, but there may be others.

The following may lead to failure:

1. Voltage drop when rebooting;
2. Frequent forced restart of the computer even before installing the system;
3. A large number of options in choosing loaders. Ideally there should be: hard drive, USB, DVD/CD ROM. In some cases, additional boot loaders are prescribed, for example, if the MAC OS X boot loader is not installed correctly. In this case, the list grows over time, which makes it difficult to correctly determine the device and boot path;
4. Unauthorized interference with the BIOS via the command line and the like...

Resetting and flashing BIOS

The first thing we can do without resorting to a service center is to reset the BIOS settings to optimal. We will consider the basic principle, since there are a huge number of manufacturers and models of motherboards, we simply physically cannot consider them all. Everyone can easily find instructions specifically for their model on the Internet.

I would like to immediately note that both the reset process and the interfaces of the utilities that will be described below may differ depending on the manufacturer, but the functionality is the same for all.

Reset procedure:

After these steps, insert the battery, connect the power and turn on the computer.

When enabled, there are two options:

1. BIOS error message. We will be offered 3 or 4 options to choose from: “Save BIOS settings”, “Load BIOS settings”, “Reset BIOS to optimal settings”, “Enter BIOS”;
2. Ideal option, settings are reset and functionality is restored. In this case, the operating system has started, go straight to the last step and update the firmware from the manufacturer’s servers.

Let's move on to the menu items:

Modern boards often already have a built-in Q-Flash utility, which displays the same list of menu items and provides the same functions. If you can get into the settings, then all this can be done through it.

The next option is only for those who have started the system!

If your operating system started after the reset, don’t put it off until later - get the CD. that came with the motherboard (If you have one) or go to the manufacturer’s website and select and download the BIOS utility that matches your version and model.

Install the utility. A reboot may be required to complete the installation. Then we launch through the “Start” menu in Windows and a slightly expanded selection opens to us.

BIOS is an intermediate link between the digital brain of a computer and the human mind. The basic input/output system provides the conversion of human-readable keyboard commands into digital processor codes. And back, after transferring the processed information, the internal workings of the PC are displayed on the monitor screen using the graphical interface of the operating system.

Bios won't load? Then the operating system will not work either. In fact, the malfunction is quite rare. First of all, it is likely to assume that the problem is with the system battery. Open the system unit and replace the battery with a new one. If there is nothing to change, you can simply remove and reinsert the battery. This will return the BIOS to factory settings.

Try starting your desktop again. If it was a dead battery, everything will start working normally.

Cooling the system unit

The next diagnostic stage is checking the cooling system. PCs are extremely sensitive to temperature conditions. The slightest deviations lead to immediate automatic activation of protective systems.

Check how the coolers on the motherboard work. It is likely that if the equipment has been in operation for a long time, the fan lubricant has dried out, and therefore there is no proper cooling effect. The solution is to lubricate the cooler or, more simply, replace it with a new one. The cost of fans is not high at all. It’s easier to replace it with a new one for a hundred rubles in five minutes than to spend several hours of unpaid work on repairs.

Insufficient cooling of the system unit often occurs after an upgrade, when new modules were connected to the PC. At the same time, a problem with nutrition arises. If, when expanding the configuration, the increased consumption of electric current and increased heat generation were not taken into account, then the BIOS may not start for these reasons. To check, you need to replace the computer's power supply with a more powerful one.

Motherboard failure

Since the BIOS is located on the motherboard, it is logical to assume that the boot problems are caused by faults on the mainland itself. First, perform a visual inspection. The presence of swollen electrolytic capacitors clearly indicates a malfunction.

Theoretically, an advanced user can independently replace unusable capacitors. You just need to have the right tools and an electronic parts store somewhere nearby. Otherwise, so much time and money will be spent on independent repairs that it would be easier and cheaper to go to a service center.

Another common cause of motherboard malfunction is burnt contacts in bridges or burnt out tracks. All this can usually be seen upon examination. If damage is found, you can safely take the device to the workshop.

Malfunction of other computer units

The reason that the BIOS does not load may also be due to malfunctions of other computer units. Checking and searching for the causal block is usually done by connecting a computer in the most minimal configuration.

• Motherboard.
• Power unit.
• Speaker.
• One of the RAM panels.

If after starting in this state the BIOS starts, the problem is in one of the other units of the system. The connection starts with the video card, then the hard drives, and so on until the problem resumes.

It is likely that after such manipulations the problem will disappear by itself, and the culprit will never be discovered. In this case, it is logical to assume violations in the contact connections. After disconnecting and reconnecting, the contacts were restored and everything started working normally.

If there is a problem with the contact connections, all that remains is to open the system unit and remove all the cables, clean the contacts and remove dust. After preventing the next element, you can try to turn on the computer again. This way you can more reliably detect the reason for the BIOS not loading.

Most often, such problems arise if the user neglects to clean the device from dust. For normal operation, it is necessary to clean the system unit at least once a year. Especially if there are pets in the house, then there is a high probability of hair getting into the computer.

Very often the BIOS does not load due to problems with the hard drive. Although, in this case, some messages appear on the screen after turning on the computer. If, after disconnecting the hard drive, the BIOS began to boot normally, the problem was with the drives.

The operation of the motherboard and BIOS is also greatly influenced by the video card. Problems with the video card primarily lead to the fact that the BIOS will not start.

If the BIOS does not start even in the minimum configuration of the computer, there is a high probability of a malfunction of the processor or the motherboard itself. There are only two options: either replace it with new ones, or send it to a service center for repairs. Unlike a hard drive, the cost of repairing a motherboard is significantly lower than buying a new one.

If the processor malfunctions, there may be no sound signals. Another possible reason leading to BIOS inoperability is the accumulation of static electricity on the central processor. To remove static, you can carefully run a metal screwdriver along the processor legs. This simple procedure sometimes restores normal BIOS operation.