Reasons Why The Bios Does Not Start

Reasons Why The Bios Does Not Start

Imagine this situation: one day you turn on your computer or laptop and see that it does not start; over, you find that the BIOS does not boot. Surely those of the readers who were faced with a situation where a computer or laptop does not boot or even does not start, are unlikely to find it pleasant. In addition, it may happen that the computer or laptop itself turns on and loads the BIOS and the operating system, but you cannot enter the BIOS, that is, the BIOS Setup program does not start. In this article, we will try to give advice on what to do when the computer or laptop turns on but does not load the BIOS, and the system does not load beyond the hardware verification procedure and the operating system does not start or the BIOS Setup does not load, and how to solve these problems

Situation description

When the computer or laptop does not boot, then, as a rule, the user instead of the familiar BIOS messages sees only a black monitor screen. Sometimes a black screen on a computer or laptop is not a constant companion of this problem. For example, you turn on the computer or laptop, and you see that the system starts up at first, some BIOS messages are displayed, but the boot process does not go beyond this stage, and the operating system does not start. What to do next in this case? First of all, do not immediately panic and carry a computer or laptop for repair, as you can try to solve this problem yourself.

The reasons that the computer or laptop does not start, or the BIOS does not start, may be various malfunctions, both related to the computer BIOS and to the PC hardware. And the solution to the problem "the computer does not load the BIOS" in this case largely depends on its cause.

Varieties of the situation:

1. Black screen

The first and most unpleasant situation is that you press the power button on a computer or laptop, but the computer does not boot, the BIOS does not start, and you see a black screen in front of you. You wait further, but in vain, since nothing else is happening. In this case, to determine the reason why the computer or laptop does not boot, you need to listen to the sounds that the BIOS emits at boot. One short beep usually indicates that the BIOS has successfully completed a hardware check.

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1.1. Black screen and one beep

In this case, the cause of the problem is most often the monitor (of course, if it is a desktop computer). Therefore, it is best in this situation to check the connection of the monitor to the computer or the power cable of the monitor. If the computer does not start after that, but the black screen remains, then it is not a matter of the monitor.

1.2. Black screen and several signals

The presence of several signals at the moment when the computer turns on and the system boots, usually means some kind of malfunction. As a rule, the meaning of these signals is different for different BIOS models. But most likely, if you do not see anything on the screen, then the problem is again associated with the video system, but this time, most likely, with the video card. However, in order to be completely sure of this issue, it is best to refer to the list of conditional sound signals for the version of BIOS that is installed on your computer or laptop.

1.3. Black screen and no beeps

If the computer turns on, but the “black screen” is not accompanied by any sound signals, then we can assume that something is wrong with the power system. For example, the power supply has failed and for this reason does not supply the necessary voltage to the system board. Or simply there is no contact between the motherboard and the power cable. Also, the cause of the problem may be a malfunction of the BIOS itself, the motherboard, processor, memory, and even the hard drive. In addition, sometimes the reason that the computer does not boot may be insufficient cooling of the electronic components of the motherboard.

2. There is no black screen, the computer displays boot messages, but the user cannot enter the BIOS

Separately, it is worth mentioning the version of the situation when the computer turns on, but there is no “black screen” and the system boots normally, however, it does not enter the BIOS program for computer settings. BIOS Setup.

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2.1. BIOS entry key pressed incorrectly

True, there is one caveat. Some users may immediately panic about “I can’t get into the BIOS”, although they simply don’t know how to correctly enter the BIOS. To enter the BIOS, you just need to press the appropriate key after the computer turns on. But many users press the wrong key or do it at the wrong time and only therefore can not enter the BIOS. About what to do in order to enter the BIOS setup program, after the computer turns on, we wrote in the corresponding article.

2.2. The BIOS entry key was pressed correctly, but the BIOS still cannot be entered

But it may happen that the BIOS Setup does not start, and you cannot enter it even though the right key seems to be pressed. Most often, if you press the right key and cannot enter the BIOS, the keyboard is the culprit. For example, if you use a USB keyboard and the USB support is not installed in the BIOS, then you will not be able to enter the BIOS Setup. In addition, it is worth checking the health of the keyboard on another computer. If the BIOS does not open even after the exclusion of the keyboard factor, then the matter is in another component of the computer.

3. BIOS Information Stop

Also, a situation is often encountered when a computer starts up, but does not load the operating system, but displays a text message about a certain error when the BIOS boots. Continuing the download in this case depends on the nature of this error. For example, a BIOS checksum error message may indicate that the CMOS battery is low, and usually the user in this case can continue to work after pressing a certain key.

Reasons Why The Bios Does Not Start

Ways to solve problems

First of all, in order to solve the problem and eliminate the reason why the black screen appears, and the computer does not load the BIOS and the operating system, you should remember what you did before the problem arose? Did you install new devices into your computer just before the black screen appeared? Have you made any changes to the BIOS settings?

If you really made changes to the hardware, it is recommended that you restore the system to its previous state by removing newly installed hardware. If after that the computer works fine and loads the BIOS, then this means that the problem was precisely in the remote hardware.

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In the event that you made independent BIOS settings, the BIOS can be returned to safe factory settings. To do this, as a rule, it is enough to install a special CMOS memory reset jumper on the motherboard or remove the CMOS battery. Typically, this operation often helps when the computer does not boot the BIOS.

If you know for sure that you did not perform any actions with the BIOS or equipment, but the computer or laptop still gives you a black screen and does not load the BIOS, then you will have to check all the equipment yourself.

Sometimes the cause of the malfunction may be the dustiness of the "insides" of the computer. Therefore, the very first procedure for any user trying to revive a computer is cleaning the internal space of the system unit. Only after that it will be possible to move on and check the operability of all systems.

It is also possible a temporary failure of the system due to overheating of the processor or motherboard. Therefore, it is worth checking the coolers of the system unit and processor. Then, in turn, it is worth checking the main components of the computer. the processor, RAM, motherboard, video card, power supply. A hard drive malfunction rarely can cause the BIOS to fail to load, however this option should also not be discarded.


The situation when the computer does not start and does not load the BIOS and OS, and the user sees instead of them only a black screen, of course, can not be called pleasant. Since in this case the computer cannot be used for its intended purpose as a business or entertainment tool, this is a great inconvenience for the user. However, the situation where the computer’s BIOS does not start is not always as fatal as it seems at first glance. Since it is extremely rare for a computer to freeze and the inability to boot the BIOS or the inability to enter the BIOS Setup is a symptom of a hard disk failure, the user does not lose important information recorded on it. In addition, there are a number of ways that can identify a faulty item and revive the computer. Of course, in some cases it is impossible to identify the malfunction by the user, and then it is best to use the services of computer specialists from the service center.

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