Launch BIOS when turned on. BIOS does not load: instructions for solving the problem. Disabling fast boot

Updated: 02/26/2020 Published: March 13, 2018

Description

Every time you turn on the computer, the BIOS immediately opens (a blue window with settings). After exiting it, either the system starts or only the BIOS loads again.

Very often, this can happen with laptops from ASUS, MSI or Samsung.

Cause

Typically, the problem is caused by the BIOS not being able to find the device from which the operating system should boot. This may happen for the following reasons:

  1. The settings of the basic input/output system have gone wrong;
  2. There are no media to run the operating system or its malfunction;
  3. Software error BIOS;
  4. Warning about computer malfunction - launching the menu indicates the presence of an incorrect setting, which can lead to failure of the PC itself. For example, incorrect bus frequency.

It is also possible that the BIOS start key (usually Del or F2) is simply stuck - because of this, the basic input/output system is constantly stuck.

Solution

Solutions are arranged in order of ease of diagnosis and likelihood of occurrence.

1. Enable Launch CSM (BIOS / UEFI mode)

In case of using systems that do not support UEFI (for example, Windows 7), it is necessary that the “Launch CSM” option is enabled (this option is responsible for compatibility with older operating systems). If it is turned off, first find the option “ Secure Boot"- turn it off and restart the computer. Then we activate Launch CSM. Afterwards you can try restarting the computer.

Checking if there is a section Boot Device Control and the ability to choose between options such as: UEFI and Legacy, UEFI Only, Legacy Only. For older versions of the system, you should choose Legacy and UEFI Only or Legacy Only. For new systems you need to try different options.

Some BIOS/UEFI versions have an option to select the type of operating system - there may be Windows options 8 (7) and Other OS. For systems that do not support UEFI, select the last option.

2. Checking the disk drive

We check the functionality of the disk on which the operating system (or bootloader) is installed. To do this you can:

a) See if the BIOS disk is visible in the partition Main.

b) Disconnect the disk from the computer and insert it into another, checking that it is detected and data can be read from it.

12. Setting date and time

We go into the BIOS and check that the date and time are correct. If they are incorrect, then we ask correct values. Apply the settings and exit the BIOS.

If the date and time are lost when the computer is turned off, the battery needs to be replaced. motherboard.

13. Disabling fast boot

Disabling fast boot in the BIOS may also help. To do this, find the option Fast Boot and move it to position Disabled. The option itself can be found in one of the sections:

  • Advanced - OS Configuration
  • BIOS Features

* please note that the “Quick Boot” option, similar in name, has a different purpose and does not affect our settings in any way, so touch this option no need.

14. Bootloader recovery

Due to system boot problems, the computer will constantly launch the BIOS. The operating system may not start due to problems with the bootloader.

To solve the problem, run . Then run 2 commands on the command line:

bootrec.exe /fixmbr

bootrec.exe /fixboot

We check the system startup. If this does not happen, run the commands:

bootrec.exe /scanos

bootrec.exe /rebuildbcd

* using these commands we will scan the disk for operating systems and write the found systems into the boot.

We check the system startup again.

15. System Restore

The problem can be resolved by using a checkpoint recovery tool. Again we launch system recovery from the Windows installation disk. Afterwards we perform a system rollback.

We try to select a point at the moment when the system started normally.

16. Update BIOS

To update the BIOS, download the latest version from the motherboard developer's website. Instructions are attached to the downloaded archive - we carefully study it and carry out step-by-step actions.

If you already have it installed on your computer latest version BIOS, then install it again (reflash the BIOS).

The situation when a user turns on a computer or laptop and sees that instead of loading the operating system, the BIOS options setup program opens does not occur very often. However, it cannot be classified as a problem that the user has no chance of encountering. This problem is unpleasant because it makes it impossible to use the computer for its intended purpose.

It should be noted that not all BIOS provide automatic entry into the BIOS when turning on a computer or laptop. In most cases, if any faults are detected, the BIOS stops the computer or laptop from booting. Automatic entry into the BIOS is intended to indicate to the user that he must fix something in the BIOS before continuing.

It follows from this that the source of the problem, as a rule, is incorrect BIOS settings. First of all, overestimated values ​​of the frequency or voltage of the memory or processor can lead to spontaneous entry into the BIOS - if the user has been overclocking hardware components. In addition, many motherboards react by booting the BIOS to unexpected power outages, perceiving them as evidence of system instability due to overclocking.

Very often spontaneous loading BIOS when turning on a computer or laptop, it may also indicate problems with the BIOS itself. In most cases, these problems can be caused by a faulty battery powering the CMOS memory. The problem may also appear when the hardware of a computer or laptop changes, for example, when installing a new video card.

And finally, you shouldn’t discount such a banal reason as a faulty keyboard or even just a single key that sticks. It is possible that a faulty keyboard constantly emits a signal that is interpreted by the BIOS as a signal from a key intended to enter the BIOS.

What needs to be done to fix the problem

If you are faced with a situation where the computer automatically loads the BIOS of your computer or laptop, then first of all you should try to restart the computer again. It is quite possible that you yourself could accidentally press the BIOS entry key when rebooting or turning on your computer or laptop. Also, the BIOS setup program may appear after a computer or laptop restart caused by an unexpected loss of power in the network.

However, if you are convinced that the cause of the problem is not a random error, then you should try other ways to fix it. First of all, you can try changing the keyboard. Then try to remember if you have made any changes to the BIOS before. If so, then the options you edited should be returned to their original values. The safest thing to do is reset the BIOS to default settings. You should also try removing recently installed cards from the computer, if any.

If this operation does not help, then you can try replacing the BIOS battery with a new one. Practice shows that in most cases changing the battery helps solve the problem. However, if the problem still persists, then we can most likely conclude that the cause of the situation is a faulty BIOS chip or motherboard.

Conclusion

The reasons for the situation when the computer spontaneously loads the BIOS instead of loading the operating system can be varied. This phenomenon may be caused by incorrect settings BIOS and hardware failure. If the situation is not the result of a random failure, for example, caused by an external voltage surge, then in most cases the problem can be corrected by resetting the BIOS to default settings.

BIOS is the basic input and output system that stores special algorithms necessary for the proper functioning of the entire computer. The user can make certain changes to it in order to improve the performance of the PC, but if the BIOS does not start, this may indicate serious problems with the computer.

There is no universal way to solve this problem, since, depending on the cause, you need to look for a solution. For example, in some cases, in order to “revive” the BIOS, you will have to disassemble the computer and carry out some manipulations with the hardware, while in others, it will be enough to simply try to enter it using the capabilities of the operating system.

Reason 1: Problems with components

If, when you turn on the PC, the machine either does not show any signs of life at all, or only the indicators on the case are lit, but there are no sounds and/or messages on the screen, then in most cases this means that the problem lies in the components. Inspect these components:


Physical damage to important computer components occurs, but the main reason for the inability to start a PC normally is severe dust contamination of its insides. Dust can become lodged in fans and contacts, disrupting the flow of voltage from one component to another.

When disassembling the system unit or laptop case, pay attention to the amount of dust. If there is too much of it, then do “cleaning”. Large volumes can be removed with a vacuum cleaner operating at low power. If you use a vacuum cleaner while cleaning, be careful as you may accidentally damage the inside of your PC.

When the main layer of dust has been removed, arm yourself with a brush and dry wipes to remove the remaining dirt. It is possible that contamination has entered the power supply. In this case, it will have to be disassembled and cleaned from the inside. Also check the contacts and connectors for dust.

Reason 2: Compatibility issues

In rare cases, the computer and BIOS may stop working due to incompatibility of any component that is connected to the motherboard. Usually it’s quite easy to figure out the problem object, for example, if you recently added/changed a bar random access memory, then most likely the new bracket is incompatible with other PC components. In this case, try starting the computer with old RAM.

Less commonly, it happens when one of the computer components fails and is no longer supported by the system. It is quite difficult to identify the problem in this case, since the computer does not start. Various sound signals or special messages on the screen provided by the BIOS. For example, by looking at the error code or beep, you can find out which component is having a problem.

In the case of incompatibility of certain components on the motherboard, the computer often shows signs of life. The user can hear the operation hard drives, coolers, launching other components, but nothing appears on the screen. Most often, in addition to the startup sounds of computer components, you can hear some extraneous signals that are played by the BIOS or some important PC component, thus reporting a problem.

If there is no signal/message or they are illegible, then you will have to use this instruction to find out what the problem is:

If you completely assembled the computer (without finding a problematic element), connected all the devices to it and it began to turn on normally, then there can be two explanations for this behavior:

  • Perhaps due to vibration and/or other physical impact on the PC, the contact from some important component has come out of the connector. In the actual disassembly and reassembly, you simply reconnected an important component;
  • A system failure occurred due to which the computer had problems reading a component. Reconnecting each element to the motherboard again or resetting the BIOS solves this problem.

Reason 3: System failure

In this case, the OS loads without any complications, work in it also proceeds normally, but when you need to enter the BIOS, you are unable to do anything. This option developments are extremely rare, but they do occur.

The method for solving the problem that has arisen is effective only if your operating system boots normally, but you cannot enter the BIOS. Here we can also recommend trying all the login keys - F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, Delete, Esc. Another option is to use each of these keys in combination with Shift or fn(the latter is only relevant for laptops).

This method will only be applicable for Windows 8 and higher, since this system allows you to restart the PC and then turning on the BIOS. Use this instruction to perform a reboot and then start the basic input and output system:


In case you have an operating room Windows system 7 and older, and also if you do not find the item "Firmware and UEFI Settings" V « Additional options» , you can use « Command line» . Open it with cmd commands in line "Run"(called by key combination Win+R).

You need to enter the following value in it:

shutdown.exe /r /o

After clicking on Enter the computer will reboot and enter the BIOS or offer boot options with entering the BIOS.

Typically, after such an entry, the basic I/O system will boot without any problems in the future if you are already using key combinations. If it is not possible to re-enter the BIOS using the keys, it means that a serious failure has occurred in the settings.

Reason 4: Incorrect settings

Due to a failure in the settings, the hot keys for entering may change, so if such a failure occurs, it would be wise to reset all settings to factory settings. In most cases, everything returns to normal. This method is recommended to be used only in cases where the computer boots without problems, but you cannot enter the BIOS.

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 to Windows computer, but you must enter the BIOS in order to run the installer. 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 press repeatedly and quickly hotkey for BIOS.

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. Usually, similar problem 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 wireless keyboard, accordingly, we will need to use a wired one to eliminate the possibility of such a reason. 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 possible from the computer: drives, hard disks 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 precisely this device that you will need to deal with (it is better to take it to 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 version BIOS, 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), which 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 this problem is that the motherboard is practically 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 they talk about its malfunction, which means that all this needs to 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 with motherboard everything is ok, you should try the following:

  1. Disconnect your computer from the network, and also remove all unnecessary devices: mouse, speakers, keyboard, etc. additional devices and cables. As a result, to system unit should only be connected network cable and monitor.
  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.

Sometimes after some laptop models stop loading operating system. Instead, when turned on, they immediately automatically enter the BIOS. There, if you look at the boot list (), you will notice that it is empty. That is, there is no hard drive neither DVD drive, nor bootable flash drive, which you could paste into USB port. Although they are all connected and can even be displayed in the BIOS among the connected devices.

What to do in this situation and how to return the laptop to working condition yourself at home?

Why is this happening?

In most cases, this situation occurs, as mentioned above, after resetting the BIOS settings. Moreover, it is not necessary to do this through the corresponding menu. It is enough to take out the battery in the laptop for a few minutes and disconnect it from electrical network. Updating the BIOS and removing dust also often leads to its reset.

In some versions of laptops, especially after 2016, there are various options in the BIOS, incorrect installation which leads to a ban on booting from a hard drive or flash drive. Therefore, when turned on, the laptop itself enters the BIOS, since it does not see a single device from which it could continue booting.

How to fix this situation?

For this purpose in BIOS settings that appear on the screen immediately after turning on the laptop, you need to find the option and disable it, that is, put it in the Disabled state. It may have a slightly different name, such as Fast Boot, and is usually located on the Advanced or Boot tab. IN Asus laptops With the UEFI system, you need to press F7 in the main window to activate the advanced mode.

Fast Boot Option

As soon as you have disabled Fast Boot, immediately save the settings with the F10 button, then restart the laptop and go into the BIOS again.

Next, on the Boot or Security tab (possibly in our case on other tabs), you need to find the option and also disable it by moving it to the Disabled state, and the UEFI and Legacy OS (CSM - Compatibility Support Module) (OS Mode Selection) parameter should be set to CMS OS or Other OS or Legacy.

Secure Boot Option

OS Mode Selection Option

Now we save the settings using the same F10 button, reboot and check. The laptop should start loading Windows.

If this does not happen, then try to find the Legacy Support option in the BIOS and set it to Enabled. Also, if there is a parameter, then you need to use it by selecting it with the “Enter” button and entering the code from the message that appears.

“Clear All Secure Boot Keys” option in BIOS

If all else fails?

In this case, there is a possibility of serious problems with the hard drive. You need to try to replace it with another one that is known to work.