The computer does not load the BIOS. BIOS won't start: root causes of the problem. The computer turns on, but the monitor screen is "full of black secrets"
Consider a situation: your computer is working fine, but you cannot enter the BIOS. Below we will consider the main reasons that can affect the occurrence of this problem, as well as, accordingly, ways to solve them.
The problem with entering the BIOS while the computer is working normally is a fairly common problem that can arise for various reasons. In this article, we will try to cover the most common causes so that you can quickly fix the problem.
No black screen, computer displays boot messages, but user cannot enter BIOS
As mentioned earlier, the boot process step is slightly related to the previous steps, primarily due to the added complexity of reading the file system. The bootloader must also obtain the hardware information of the underlying hardware in order to properly load the correct operating system from the appropriate partition and provide any additional files or data that may be required. It must also read its own config file from a regular file stored in the filesystem of the boot partition, so it must, by at leastto have full read support for whatever filesystem it resides on.
Why is the BIOS not loading?
Reason 1: Incorrect BIOS entry
The most common reason, so pay special attention to it.
Entering the BIOS is done something like this: you turn on or send the computer to reboot, and at the earliest stage of the system boot, you start repeatedly and quickly press the key (or key combination) that is responsible for entering the BIOS.
Problems with other components
Before anything else can happen, when the bootloader is first loaded, it must load and run the primitive filesystem "drivers" that give it the ability to read at least file systemon which it is located. Typically, each module will execute as it is found and loaded from disk. At this point, with all the relevant configuration in hand, the bootloader can display what is commonly called the boot menu on the screen. If several operating systems are installed, through the boot menu, the user can manage the list of operating systems and choose which one to boot.
- Initiate access to the file system.
- Displays the boot menu.
As a rule, on most computers, either the key F2, or Del... If you can't sign in with the first key, try the second.
But the list of keys that can be responsible for entering the BIOS does not end there either: if you find it difficult to determine the key, refer to the documentation of your computer, pay attention to the screen at the beginning of the system boot - information about the keys responsible for opening that one is often glimpsed or another section of the computer, and also read the articles on the links below, in which we examined in detail the procedure for entering the BIOS.
The bootloader process is certainly much more subtle and complex than most people realize, and has been designed and developed to work in a fairly standardized manner across platforms and operating systems. The individual bootloader components are generally self-contained and self-contained. They can be swapped out separately without affecting everything, which means you can add drives and boot from different devices without worrying about breaking existing configurations and operating systems.
Troubleshoot bootloader problems
When done properly, the boot process is a well oiled machine, but when a disaster strikes, it can be a very difficult process to understand and debug. The complex nature of the boot process means there is a lot to tweak and tweak, and a lot can go wrong. Listed below are some resources that you may find helpful in troubleshooting bootloader issues.
Reason 2: keyboard problem
If you are sure that you are pressing the correct key to enter the BIOS, but you still cannot enter it, the problem may be in the keyboard itself, for example, when the key you need does not work.
Turn on all peripherals connected to the computer. ... Fortunately, there is a solution to let your computer recognize your charge again and help you avoid buying. new battery... From there go to "Accessories" and find "Command Prompt". ... However, depending on how the user decided, the same hDD can be divided into two or more partitions and even have a different operating system on each of these partitions.
After loading the operating system, the computer can already work in close proximity to the microprocessor, executing commands from application programs or softwareused by users such as: processor or word processor, calculation, database, multimedia programs, etc.
If possible, replace the keyboard, preferably using a wired one connected to the computer via USB.
Reason 3: problem while booting one of the devices
Suspecting this reason, you turn on the computer, but the BIOS does not load, which means that the operating system cannot be started. As a result, a black screen may appear on the screen, and there is no way to enter the BIOS.
Well, let's try to clarify these concepts a little. Although it is very simple program, absolutely irreplaceable, since without it it is impossible to start the computer. From that moment on, it stops working, since all control goes to the operating system. It is this force that is responsible for the battery that we can see on motherboards. It is a button stack and its only purpose is the one we mentioned.
This data can be corrupted for many reasons. We have two ways to do this. Okay, unless we have a major compatibility issue with any component we want to add, it is inconvenient to perform this update. This is the point that usually makes the motherboard manufacturers very clear, constantly reminding us that this operation is always performed under our responsibility.
In this case, you need to listen carefully to sound signalsissued by the computer - it is quite possible that the BIOS may indicate a specific problem with checking one of the devices. Learn more about decryption bIOS signals described in one of our previous articles.
When faced with a problem entering the BIOS, you should always suspect using the wrong key to enter or pressing this key late. And only after that you can already think about the other reasons for this problem.
In general, this is a difficult task that must be performed by the technician, in which success cannot be guaranteed. In most cases, the solution is to replace the motherboard. Now this does not always happen, and if the solution is to send the plate to the factory, because we must take into account that, as they say, we can get a more expensive collar than a dog, that is, depending on the motherboard, we can be more expensive to repair than buying a new motherboard.
In the same case, we would be, if our motherboard did not recognize disks of a certain capacity. Let's take a look at the next steps. Which update should we lower? Well, the one that solves our problem. Although updates are usually cumulative, this is useful if there are several of them, and they differ greatly from each other on the date of installation of all updates.
Without exaggeration, BIOS can be called the heart of a computer, without which other elements of this system simply cannot function normally. Many may not notice these processes or even not know about them, but when the computer is turned on, it is the BIOS that starts first, and only then the operating system is loaded. From time to time, various problems may arise due to which the BIOS does not start on the computer and, accordingly, the user cannot turn it on.
The computer does not turn on
What if there is an update on our motherboard manufacturer's network that solves our problem? Well, if there is not only an update that solves our problem, but also a different motherboard model, but not for ours, then the best we can do is not to install updates and consider changing the component that motivated the need to perform this update for another with whom it is not needed.
To avoid possible problems, we should always use the update program provided by the motherboard manufacturer. Well, we need a couple of things, depending on how we update. From there, we have to follow the manufacturer's instructions.
OS problems
Despite the fact that the operating system is loaded only later, in some cases an attempt to install an additional OS becomes the reason that the BIOS does not load on the computer (black screen). This is mainly due to the occurrence of a failure in the settings, so it is enough to simply restore them to their default value to solve the problem. This is done as follows:
What if all else fails?
In these cases, the problem is somewhat complex. Let's see in these cases what we need. From here we have to copy both the updater and the update file in the same support and, as in the previous case, follow the manufacturer's instructions.
To complete this tutorial, all that remains is to recall some points of great interest. This programming code is not on the hard drive, it is on the motherboard chip. Only a few of its functions are still used by peripheral devices. Otherwise, all other functions can be effectively controlled by the system, including hardware overclocking or access to passwords.
- disconnect the monitor and computer from the network;
- open the system unit and take out the battery from the motherboard (often it looks like a 5 kopeck coin);
- wait a few minutes;
- put the battery back in place and turn on the computer.
After performing this procedure, the BIOS will start to start from standard settingsas if no adjustments were ever made to them.
It contains different drivers i.e. programs that run computers on a low level computer. First, the computer is not tied to a specific operating system, and each user can install the operating system that best suits their needs.
Primary boot record
This can be a hard drive, floppy disk, or CD. When the media we are booting from is a hard drive, another step is added to the boot process. As you know, a hard disk is divided into partitions that can belong to different operating systems. Each of these partitions has its own boot record, and the first boot record was found in the first sector hard drive... It contains a table on the main partitions of the disk and, in addition, a program that loads the boot loader program for the operating system of your choice.
If your BIOS still does not load, you will need to check the connections.
Connection Failure
There is also a high probability that the computer does not boot beyond the BIOS due to some kind of breaks in the data loops or supply networks. To test this option, first hear if your motherboard cooler is working. In many bIOS systems is powered by the processor, so if there is insufficient cooling, it may malfunction.
This allows different disk partitions to contain different operating systems with different boot programs. If we want to start the operating system from an inactive partition, we must first start the active operating system and then replace the active partition with one of our commands. More advanced master records allow the user to choose which operating system to run. Some of them even offer menus that appear graphically on your computer screen with a background that shows your favorite image.
From time to time, contact groups may leave the fan, so the board does not provide the necessary cooling and the BIOS does not start. It is also worth carefully checking all the daisy chain and cable connections, and then check if the motherboard and contacts were not dusty. Few people know that dust is a source of electrostatic fields and an excellent conductor, so excessive accumulation of dust is detrimental to the operation of your computer. If there is really a lot of dust, then clean the device from it with a low-power vacuum cleaner and a brush.
Initial boot program
Its main purpose, however, is different, and therefore its ability to make beautiful menus is not so impressive. The master recorder launches the bootloader program for the operating system of your choice. Those who do not have the type mentioned are passed as parameters. WARNING.
The above boot, others, tabular, image and root command values \u200b\u200bare exemplary only and you should be aware of your specific installation. Don't worry about backing up boot disk is in hand if something went wrong with the configuration.
