Greetings, dear readers! You know, it probably wouldn't be a blog with computer tips, if I didn't write anything about a system like BIOS.
I am sure that every day search engines are asked this question, how to enter BIOS, and today I will try to tell you about this system and how to enter BIOS on different computers.
What is BIOS?
Let's first figure out what it is. Professionally speaking, these are:
(English basic input / output system - "basic input-output system") - implemented in the form of microprograms part of the system software, which is intended to provide the operating system API access to the computer hardware and devices connected to it.
Well, if it's simple, then BIOS this set of firmware is written to the system board. Even before the operating system starts to load, BIOS performs a lot of useful and necessary functions. For example, there is such a very important task for the BIOS, it is checking all the computer components - POST.
As soon as you press the power button of your computer, the procedure starts POST, which checks for serviceability and the presence of all computer components (video card, RAM, hard disk, and so on) and in case of failure of any of the components, it gives an error by which one can determine this or that breakdown. A beep is also issued, but it seems to me on older computers, in new ones I have not seen this.
The BIOS also controls the loading of the operating system and indicates from which source to boot (DVD / CD drive, hard drive, or a connected flash device). This is especially important when installing an operating system, I will write about this below. Also, the BIOS stores in itself a lot of different settings that can be changed. For example, through the BIOS, I overclocked my processor a little, by increasing the frequency of the system bus.
How do I enter BIOS?
In order to enter the BIOS, immediately after pressing the power button of the computer, you need to press a key diligently, but which one we will now figure out. The fact is that different manufacturers of motherboards or laptops have their own key combination to enter the BIOS. These are usually keys Del , F2, or Esc , there may also be combinations of different keys, and for this I will lay out a plate in which you can see the keys for entering the BIOS from different manufacturers.
What to do in BIOS?
An interesting question that has many answers. First of all, you need to enter the BIOS before starting the installation of Windows or another OS. The fact is that by default the computer boots from the hard disk, and to install the operating system, we need to boot from a DVD / CD drive or a USB flash drive, such settings can be set by going into the BIOS, more about this is written here
Hello everyone.
I updated the BIOS on an ASUS laptop, I don't remember the model, possibly Asus x550, via Easy Flash. The update seemed to go fine. At least the process ended and the machine rebooted. After rebooting, the BIOS opened. The boot devices are no longer displayed. In addition, the settings for selecting boot devices have disappeared, as well as the "Create boot option" option. Moreover, in the SATA configurations, hard drives are displayed, and therefore determined. But they are not in the Boot section, as there is no USB drive, which was previously detected and worked. Moreover, he clearly sees the drive, since after the reboot he first starts to turn it, but does not want to boot from any device! It just opens the BIOS. That's all.
As I understand it, it will be updated, then it has been updated, because it is loading, it sees that the new version is ... But it does not want to load the devices. It just opens the BIOS when turned on. When you exit - reboot. The screws are formatted and of course it will not boot from them, but he did not open the BIOS before, but simply wrote "where is your boot device?", And now neither this nor from the boot drive. Perhaps some data was written incorrectly in CMOS, but I have no idea how to reset this data (do not offer disassembly, the machine is new).
Updated BIOS with a connected USB drive. He had the download priority.
Chipset - Intel HM76
I took the BIOS firmware from the official site.
I read the manual for such updates - everything is simple there, plug in the USB flash drive with the new BIOS, select the file through the Easy Flash utility (which is in the BIOS) and confirm the update.
Basically, jambs with a bios of a slightly different kind - a black screen.
In general the solution is:
go to the Boot section in the BIOS, then turn on Launch CSM
then go to the Security section and disable the Secure Boot Control option.
Even the most cautious users will one day have to log into the base computer on their own. It is normal to be afraid, to do something wrong, which cannot be said about the manifestation of the reverse reaction - the frivolity of beginners, moved by their irrepressibility, to test the microsystem in action. However, both some and other users may have a question: "The computer does not enter BIOS: what to do", even if the "same" service key for calling the basic microsystem of the computing device is used to enter. It will be interesting for everyone, and even for you an advanced user!
Introductory theory of "non-start-up"
Let's leave the sad story about what a BIOS is and why it is needed at all ... You need to know one thing - the BIOS is not the place where you can thoughtlessly conduct experiments. Before you change any parameter or make a certain change in the operation of the microsystem, you need to understand that the result can be sadly unexpected. Therefore, we turn on our brains and get down to business.
Energy "CMOS trouble" - the battery has run out
The one who knows what is at stake will smile. Although it is not a fact that when the situation "The computer does not enter the BIOS", a knowledgeable user immediately draws attention to the battery that keeps the CMOS memory chip, so to speak, in good shape.
Sometimes an advanced computer scientist goes in a roundabout way - he tries to reflash the BIOS or exposes the system to a kind of software "shock therapy", loading various DOS utilities and trying to revive the "maternal instinct" of the control system bootability.
In fact, the first thing to do when the problem we are considering arises is to replace the CMOS battery and manipulate the BIOS settings to reset to default values.
Where is the "main" battery located and how to reset the BIOS?
The location of the battery may depend on the modification of the computing device, its type and other design features of the device. If we talk about laptops, then often access to the battery is incredibly difficult, since the battery is often hidden deep in the bowels of a compact device. However, referring to the material of the article, which is , you can reset the BIOS settings without carrying out the difficult process of dismantling the laptop case.
In the case of stationary computers, everything is much simpler - we disconnect the power cable from the system unit, remove the protective cover and without much stress, we immediately find a large "button cell" battery. Naturally, it must be dismantled, and before putting a working battery in its place, close the battery contacts of the socket with any metal object (static, you know!). After that, proceed to the "reset user settings" operation.
Mechanical method - closing special connectors with a jumper or clicking on the "Clear" button
Some manufacturers supply their motherboards with a special button, pressing which allows you to clear the CMOS memory and return the BIOS settings to, so to speak, the original state - the factory one. However, most motherboards are equipped with a more ascetic reset mechanism - a three-pin breaker, the location of which can be easily calculated by the “CLR CMOS” marking.
So, in order (by default, we turned off the computing device and removed the protective cover):
- Typically, the reset pin mechanism is in close proximity to the CMOS battery. However, in the photo below, the jumper is located elsewhere on the board.
- Operating position of the jumper "1-2" - move the contactor one position forward / backward, in accordance with the marking on the motherboard. Regarding the graphical example (above the picture), this is position "2-3".
- Wait a couple of minutes and install a new battery in the battery connector.
- If the motherboard has a special button, activate it.
- Close the cover and connect the power cable to the system unit.
- Turn on your computer.
If everything went, as they say, "Hurray", then pressing the "desired" button will take you to the interface of basic settings, no - we continue to look for the reason.
Keyboard "passions", or Why can't I enter the BIOS of the computer?
Sometimes, especially in portable electronics, the culprit is the keyboard module itself. Make sure that none of the keys are stuck, that is, not in a closed (pressed) state.
Perhaps some unfortunate incident that happened the day before will come to mind - a spilled cup of coffee, for example.
In any case, you should try the option “connecting an external keyboard via USB connector”.
If the prerequisites are correct, the keyboard module needs to be replaced. For desktop computers, the most acceptable test scheme is to connect a known working keyboard to the PS / 2 connector.
Hard case - "hard" problems
The inability of the computer BIOS system to start or complete the full initialization process may be caused by a malfunction of any hardware component of the computer. Most often, the reason lies in the failure of the hard disk. By the way, do not neglect the importance of the sound signals (issued by the BIOS system). More details about the "beep" codes can be found ... This kind of knowledge makes it incredibly easy to find a specific fault.
It is not uncommon for a favorable boot scenario to be disturbed by a malfunction of the front connection panel to which external audio and other peripherals are connected. Try to disconnect the connecting cable of the external controller from the motherboard.
Check if the problem "the computer does not enter the BIOS" has been eliminated, if not, disconnect the hard drive and restart the computer. In the end, if possible, experiment with the ramps - check their performance, so to speak, by alternating connection. All of the above also applies to laptops. Perhaps information from you will be most welcome.
In addition to the above
So, dear reader, you have familiarized yourself with the basic methods of eliminating the causes when the computer does not enter BIOS. We dare to assure you that the described troubleshooting algorithm is the most optimal. However, if your BIOS simply crashed, then you still can't do without flashing the CMOS chip (see the article that is ). Happy repair to you!
In the section on the question What to do if the system automatically loads the BIOS at startup. I launch and go straight into BIOS. The keyboard does not jam. given by the author I-beam the best answer is a bug in the BIOS is quite likely. Try zeroing (as already advised). In addition, the battery could stupidly sit down, the settings go astray, so he swears. Change CR1232 like. 15 rubles in a computer costs
Well, to the extreme. My parents had a similar story. Each download was swearing at something there and climbed into the BIOS. I tormented it for 1.5 years, then I came to the conclusion that it was necessary to reflash the BIOS version. I found the freshest, installed it.
It was terribly scary, but nothing. All right. But now he squeaked at least once ....
PS About removing the battery (answer above) is not entirely correct. More precisely, it has not been correct for a long time.
1. Is in the BIOS itself Load default values
2. Removing the battery helps only in old mothers.
3. Newer mothers have a jumper and 3 hairpins next to the battery. Closed 2. Here you need to close the middle and free for 5 seconds. Then put it back in place. This is a reset.
Answer from Detached[guru]
try to reset the bios
Answer from Igor Sokolov (RA2FCZ)[guru]
Apparently in BIOS such settings, reset to default. Just remove the battery from the motherboard for 5 minutes and put it back
Answer from Valery[master]
The best option is to change the battery
Answer from Serve[guru]
Met one such. Look carefully at the POST messages (it can fly quickly, pause to help), as options: a dead battery (the date will be reset, replace it), screwed up with the settings (reset to default), an error of some device.
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 operability, starting the operating system, and more. One of the most frustrating situations a user can face is when the BIOS refuses to start.
Let's imagine a situation: suppose you decided to reinstall Windows on your computer, but in order to run the installation program, you must enter the BIOS. You have made more than one attempt to enter the BIOS, and all of them were unsuccessful.
Another situation: when starting the computer, first the user 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 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 send the computer to a reboot or just turn it on and at the very first stage of turning it on, you start repeatedly and quickly press the hotkey for the BIOS.
There are a huge number of options for entering the BIOS (this is especially observed in laptops), but in most cases one of the following keys is found: F1, F2 and Del. If none of the keys helped to enter the BIOS, try googling your motherboard model (for a stationary PC) or laptop model on the Internet in order to find out how your device is entered into BIOS.
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 indispensable.
Needless to say, a computer keyboard must be in good working order? Be sure to test your keyboard by logging into Windows or by connecting it to another computer.
If everything is in order with the performance of the keyboard, then, perhaps, the problem lies in the unsupported BIOS keyboard. As a rule, a similar problem is observed in users of old computers (laptops), and if you use a wired or USB keyboard, then this possibility may well be.
If you have a wireless keyboard, accordingly, we will need to use a wired one to eliminate the possibility of such a cause. Especially older BIOS versions may lack support for the USB keyboard interface, but to check this, you will need to either connect an old keyboard with a PS / 2 connector or purchase a PS / 2 adapter for a USB keyboard.
Reason 3: inoperative USB port
The port to which the keyboard is connected must be sure to work. Try plugging your keyboard into a different port and retry entering BIOS.
Reason 4: conflicting devices
One of the devices on the computer may have malfunctioned, resulting in a conflict, which is why you cannot enter the BIOS.
Try disconnecting everything you can from your computer: drives, hard drives or solid state drives, all USB devices connected to the motherboard, PCI cards. If there is an integrated video card, then disable the discrete one, and then try to enter the BIOS again. If the attempt is successful, connect one device at a time to the computer to find out what is conflicting. Having identified the problem device, it is with it that you need to deal with it (it is better to take it to the service center for diagnostics).
Reason 5: malfunction of the computer
If the BIOS starts to make sounds when you turn on the computer, but does not want to start, you should listen to the signals and fix them. Often, the BIOS, using such signals, makes it clear what went wrong. There are a lot of tables on the Internet that decode sound signals for different versions of BIOS, using which you can quickly understand the cause of the problem and start fixing it.
Reason 6: problematic BIOS settings
As a rule, a similar cause of the problem occurs when the user makes changes to the operation of the BIOS. In this case, you should try to reset the BIOS to factory settings. As a rule, in most cases you will need to look under the case of the system unit, where on the motherboard you can find a special switch (CMOS jumper), which is set to 1-2. To perform a reset, simply 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 in its work, you can carry out a small diagnostic procedure.
First of all, you need to inspect the motherboard itself: are there any oxidations, 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 re-soldered to new ones.
If visually everything is fine with the motherboard, you should try the following:
- Disconnect the 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 should be connected to the system unit.
- Clear CMOS. To do this, you have to remove the battery from the motherboard for a few seconds and then reinstall it.
- Remove all boards from all slots on the motherboard, leaving only the processor and speaker connected.
- Start the computer and pay attention to the sound: if it is, then this tells you that the motherboard is working. If not, then everything is much sadder - she does not respond.
If you have confirmed the guess that the problem is in the motherboard, you should try to take it to a service center - it is quite possible that a specialist will be able to return it to work.
These are the main reasons that affect the lack of BIOS start. If you have any comments on the article, leave them in the comments.
