Today we will analyze a popular question - How to enter BIOS on Windows 10?
True, most computers on the "top ten" instead of the good old BIOS are already equipped with its advanced successor - UEFI, a modern firmware with a beautiful and more understandable graphical shell. But it doesn't change the essence.
The nuance here is this - because of the built-in fast boot mode, Win 10 usually boots almost instantly. So it’s not so easy to have time to press the right keys, as when trying to enter the BIOS on older versions of Windows.
And yet, the problem is easily solved in a few elementary steps.
How to open the BIOS if Windows 10 boots normally (i.e. there are no special problems)
Directly from the Windows 10 open BIOS still fails - the session will have to end.
Everything! After the restart, you will automatically enter the BIOS (as you remember, in Windows 10, most often it is already UEFI instead, but it will probably be called in the old fashioned way for many more years).
How to enter the BIOS from the welcome screen if the entrance to Windows 10 itself is blocked
What to do if Windows 10 won't let you sign in and start a new session without letting you past the login screen (the one where the OS usually asks for the user's password)? This can happen, for example, if you have installed some drivers or applications that conflict with the operation of the OS. Or even just forgot the password.
Nothing wrong! That's how enter BIOS in this case.
After the restart, the system will direct us to the above menu "Select action", and then everything in the same way as in the section above: "Diagnostics" / "Advanced options" / "UEFI firmware settings" / "Restart".
How to enter the BIOS when starting Windows 10 (we refuse fast boot)
Is it still possible enter BIOS (UEFI) on Windows 10 using the classic method, just by setting the desired key combination at startup? You can, only for this we have to turn off fast loading.
Additional methods and ways to enter the BIOS we described in our article.
Everything! Now the computer will start in the usual slow mode. We find the inscription Press(…the same button or combination…) "to setup" on a black screen during Windows boot 10 and press it constantly until we open the BIOS.
If you didn’t see the necessary hint inscription, in our article “How to enter the BIOS on Windows 7” you will find the most complete table with the cherished keyboard shortcuts for various models of laptops and PCs.
How to enter BIOS (UEFI) on Windows 10 via command line?
This method is good when, for some reason, Windows 10 does not want to restart with any of the standard methods described above. Your case? Then we do the following.
How to enter the BIOS on Windows 10 if it is password-protected?
For this it is enough:
!!! Do not forget to completely turn off the computer before this and remove all cords from outlets!
You can read more about this simple procedure in our article.
Have you tried all the methods, but still can't get into the BIOS? Possible problems
- cause. You recently updated the BIOS on your Windows 10 or upgraded it to UEFI yourself, and installed an incompatible version by mistake (or maybe your ROM just doesn't handle the rather resource-hungry UEFI).
Solution. We carry the computer to the service, where it is restored quite quickly.
- cause. The ROM chip in which the BIOS is “stored” has become unusable.
Solution. For the “system unit”, you can buy a new ROM and carefully replace it with your own hands (because in 99% of cases it is not soldered, but simply inserted into a special socket). But the laptop, most likely, will have to be soldered, so it's easier to contact the workshop.
- cause. The keyboard or part of it does not work. This happens - for example, if you rarely use the "upper" keys F1-F12, then you could easily not notice that this particular group of buttons is out of order.
Solution. Use some other login method from those described in the article - buttons are not needed in most of them. Replace or repair the keyboard.
What do different errors mean when entering the BIOS?
And finally, we have prepared a detailed cheat sheet that will allow you to quickly navigate the errors generated by the BIOS upon entry. We think the information will not be superfluous. Especially if you needed to enter the BIOS "not from a good life" (i.e. something went wrong with your Windows 10).
| MESSAGE | DESCRIPTION OF THE PROBLEM |
| 8042 Gate A20 Error | Keyboard controller problem (you need to replace the controller or motherboard) |
| Address Line Short | Problem with motherboard expansion cards |
| BIOS ROM Checksum Error - System Halt | Checksum error of the permanent memory chip (it is necessary to reflash the chip or replace it) |
| BIOS Update For Installed CPU Failed | BIOS version mismatch specific model processor |
| Bad PnP Serial ID Checksum | Plug and Play device checksum error (remove the devices, carefully inspect and reinstall; if it doesn’t help, you need to change the faulty devices) |
| Boot Error - Press F1 To Retry Disk Boot Failure, Insert System Disk And Press Enter | Not found boot disk(often happens if in BIOS Setup as the first boot sector there is a disk drive, or a floppy disk drive, and at the moment the computer is turned on, there is a non-system disk or floppy disk in this drive - this often happens when, for example, they watch a movie from a disk or listen to music, and then forget to remove the disk. It is necessary to remove the disk and restart the computer, but it is better to boot from the settings in the settings. hard drive computer) |
| Bus Time Out NMI At Slot XXX | Happens if EISA bus is installed (try rebooting) |
| CH2 Timer Error | Problem initializing the second timer (check the operation of peripheral devices) |
| CMOS Battery Failed | Dead CMOS battery (replace battery) |
| CMOS Battery Has Failed | Similarly |
| CMOS Battery State Low | Similarly |
| CMOS Checksum Bad (Error, Failure) | CMOS chip checksum error (check the battery, if it doesn't help, reprogram the BIOS chip) |
| CMOS Date/Time Not Set | Errors when setting the system time and date (correct the error in the BIOS, check the battery performance) |
| CMOS Display Type | System monitor settings are incorrect in BIOS |
| CMOS Memory Size Mismatch | |
| CMOS System Options Not Set | The content of the CMOS memory is corrupted (check the battery, it may need to be flashed) |
| Cache Memory Bad, Do Not Enable Cache | Cache error (replace chip) |
| Checking NVRAM | Information that the system is updating the computer configuration (if it appears often, check the motherboard battery) |
| DMA#1(2) Error | DMA channel initialization error (possibly a problem due to the connected peripheral; the motherboard may need to be changed) |
| DMA Bus Time Out | The system does not receive a response to the DMA controller request (check peripheral devices and replace the faulty ones) |
| DMA Error | DMA controller error (might have to change the motherboard) |
| Display Type Has Changed Since Last Boot | |
| Drive X: Error | Problems with the hard drive (check the BIOS settings, the cable; if the drive is damaged, format it, or better, buy a new one) |
| DriveX Failure | Hard drive cannot be initialized (check BIOS settings, cable; if the drive is damaged, format it) |
| ECC Error | Problems with RAM(memory needs to be replaced) |
| EISA CMOS Operational | EISA board CMOS chip error (check battery or replace chip) |
| EISA Configuration Checksum Error | EISA board CMOS checksum error (check BIOS settings and battery) |
| EISA Configuration Is Not Complete | EISA board CMOS chip error (check BIOS settings) |
| Error Encountered Initializing Hard Drive | Problems initializing the IDE hard disk (check BIOS settings, correct jumper settings; if it doesn't help, replace the device) |
| Error Initializing Hard Drive Controller | Problems initializing the IDE controller (check jumpers, BIOS settings) |
| Expansion Board Not Ready At Slot XXX | Problems initializing the board in slot XXX (check the connection, the board or the slot itself may be faulty) |
| Extended RAM Failed At Offset: XXX | Extended memory initialization error (check connections, or replace memory) |
| FDD Controller Failure | Floppy drive controller initialization error (check connections or replace controller) |
| Floppy Disk Controller Resource Conflict | Floppy drive controller conflict with another device (you need to disconnect the device, work, and then connect it again) |
| HDD Controller Failure | IDE controller initialization error (check jumpers, BIOS settings) |
| Hard Disk Install Failure | Problems initializing the IDE hard disk (check the BIOS settings, jumpers, cables, if it doesn't help, change the faulty device) |
| Hard Disk Diagnosis Fail | Hard drive initialization problems (check BIOS settings, jumpers, cables, if it doesn't help, change the faulty device) |
| Hard Disk Fail (20) Hard Disk Fail (40) | Similarly |
| I/O Card Parity Error at XXX | Expansion board parity error (check board installation) |
| INTR #1 Error | Problems initializing the first channel of the interrupt controller (IRQ0-IRQ7) |
| INTR #2 Error | Problems initializing the second channel of the interrupt controller (IRQ8-IRQ15) |
| Incorrect Drive A/B - Run Setup | Floppy drive initialization error (check cable, BIOS settings) |
| Invalid Drive Specification | The hard disk is damaged or, if it is new, not partitioned (use the FDisk command) |
| Invalid Media In Drive X: | Similarly |
| Invalid System Configuration Data | Plug and Play device configuration error (reset the data with the Reset Configuration Date option) |
| Invalid System Configuration Data - Run Configuration Utility Press F1 to Resume, F2 to Setup | Similarly |
| K/B Interface Error | Keyboard issue (check connection) |
| keyboard error | Similarly |
| Keyboard Error Or No Keyboard Present | Problems with the keyboard (look for any key being pressed) |
| Keyboard Failure, Press To Continue | Similarly |
| Keyboard Is Locked Out - Unlock The KeyKeyboard Is Locked | Sticky key on the keyboard |
| Memory Address Error at XXX | |
| Memory Parity Error at XXX | Similarly |
| Memory Size Decreased | The amount of RAM is incorrectly specified in the BIOS |
| Memory Size Has Changed Since Last Boot | Similarly |
| Memory Size Increased | Similarly |
| Memory Test Fail | Problems with RAM (check the power supply and the memory itself) |
| Memory Verify Error at XXXX | Similarly |
| Missing Operation System | |
| Monitor Type Does Not Match CMOS - Run Setup | The system monitor is incorrectly specified in the BIOS |
| NVRAM Checksum Error | NVRAM memory error (check BIOS settings and battery) |
| NVRAM Cleared | Similarly |
| NVRAM Data Invalid | Similarly |
| No ROM Basic | Error when trying to boot the system from the hard drive (probably caused by a virus, you will have to partition the disk again with the loss of all data) |
| Off Board Parity Error | Attempting to boot from a floppy when there is no system floppy in the drive (remove the floppy) |
| Offending Address Not Found | Problems with devices that are not integrated into the motherboard (processor, RAM ...) |
| Offending Segment | Error unknown device(most likely, problems with data transfer or a conflict when accessing ports - check the BIOS) |
| On Board Parity Error | Problems with devices integrated into the motherboard (hard disk controller, PCI bus ...) |
| Onboard PCI VGA Not Configured For Bus Master | Problem with integrated video card |
| Operating System Not Found | Error while trying to download operating system- it was not found (probably caused by a virus, you will have to partition the disk again with the loss of all data) |
| Override Enabled - Default Loaded | The system cannot boot with the BIOS settings set, all parameters will be reset to factory defaults |
| PCI I/O Port Conflict | PCI bus device conflict - trying to use the same I/O port (refresh hardware configuration) |
| PCI IRQ Conflict | Similarly |
| PCI Memory Conflict | Device conflict on PCI bus - attempt to use the same memory area (refresh hardware configuration) |
| Parallel Port Resource Conflict | Parallel port device conflict (refresh hardware configuration or manually configure) |
| parity error | RAM parity error |
| Press A Key To Reboot | Problems booting the system (if the message appears frequently, change the motherboard) |
| Press ESC To Skip Memory Test | Pressing the ESC key will check the RAM against a shortened program |
| Press F L To Disable NMI, F2 To Reboot | Interrupt controller operation problem - it is impossible to determine the device that submitted the NMI request |
| Primary Boot Device Not Found | Device configured in BIOS as primary boot disk not found (perhaps there is no system floppy or disk - insert floppy or disk, or make appropriate settings in BIOS) |
| Primary Master Hard Disk Fail | Problems with testing the Primary Master hard drive (check BIOS settings, cables, jumpers, try connecting another drive; you may need to change the cable or hard drive) |
| Primary Slave Hard Disk Fail | Problems with testing the Primary Slave hard drive (check BIOS settings, cables, jumpers, try connecting another drive; you may need to change the cable or hard drive) |
| Primary/Secondary IDE Controller Resource Conflict | Device Conflict - IDE controller is accessing already busy resources computer (update hardware configuration or manually configure) |
| RAM Parity Error - Checking For Segment | RAM parity error (perhaps the memory bar is set incorrectly, try setting the slowest memory settings in BIOS) |
| Real Time Clock Error | Errors in setting the system time and date (check the battery, BIOS settings, if it doesn’t help, change the system board) |
| Real Time Clock Failure | Similarly |
| Secondary Master Hard Disk Fail | Problems with testing the Secondary Master hard drive (check BIOS settings, cables, jumpers, try connecting another drive; you may need to change the cable or hard drive) |
| Secondary Slave Hard Disk Fail | Problems with testing the Secondary Slave hard drive (check BIOS settings, cables, jumpers, try connecting another drive; you may need to change the cable or hard drive) |
| Serial Port 1 Resource Conflict | Device conflict using serial port COM1 (refresh hardware configuration or manually configure) |
| Serial Port 2 Resource Conflict | Device conflict using COM2 serial port (refresh hardware configuration or manually configure) |
| Should Be Empty But EISA Board Found | EISA Expansion Board Error (upgrade hardware configuration or manually configure) |
| Should Have EISA Board But Not Found | EISA expansion card error - not responding to system requests (update hardware configuration or manually configure, if that does not help, replace faulty hardware) |
| Slot Not Empty | Unknown expansion board found on ELSA bus (check BIOS settings) |
| Software Port NMI Operational | Problems with the NMI software interrupt port (check the BIOS settings, you may need to change the motherboard) |
| State Battery CMOS Low | |
| Static Device Resource Conflict | |
| System Battery Is Dead | The CMOS memory battery is exhausted (replace the battery) |
| System Battery Is Dead - Replace And Run Setup | Similarly |
| System CMOS Checksum Bad | CMOS checksum error (check the battery, replace if necessary, if it does not help, change the motherboard) |
| System Device Resource Conflict | Device conflict (upgrade hardware or manually configure) |
| System Halted, (CtrlAltDel) To Reboot | Stop the system (press Ctrl+Alt+Del combination to reboot the system) |
| System RAM Failed At Offset: XXXX | RAM initialization error (maybe the memory bar is set incorrectly, try setting the slowest memory settings in BIOS) |
| Type Display CMOS Mismatch | The system monitor type is incorrectly specified in the BIOS |
| Uncorrectable ECC DRAM Error | Problems with RAM (may have to replace the memory) |
| Unknown PCI Error | Unknown PCI bus error (if all PCI cards are working properly, change the motherboard) |
| Update Failed | Failed to update information about new Plug @ Play devices (check battery or replace system board) |
| Update OK! | Information about new devices updated successfully |
| Wrong Board In Slot | EISA Expansion Board Error (check BIOS settings or replace faulty devices) |
Here is all the information you may need to enter BIOS on Windows 10.
One method does not work - feel free to use another.
We wish you productive work and as few unpleasant surprises as possible! If you have any questions, write in the comments.
The article will be devoted to the topic of the BIOS on a computer running the Windows 10 operating system.
For those who don't already know, here's a little useful information, so to speak, in the furnace. If expressed simply and plain language, then the BIOS is special program, which controls the startup of the computer and the loading of the operating system. As soon as the user presses the power button on the computer, bios starts testing the hardware for compliance and performance, checks for the presence of required connected devices ( HDD, RAM memory, video card, etc.).
By entering the BIOS, you can configure all kinds of startup options for the operating system, view system information about the computer and associated equipment, select / change the system boot source (hard drive, CD / DVD drive, flash drive) and much more.
But there is one nuance, which we will discuss further. You can enter the BIOS by certain actions, which are different for each manufacturer of the motherboard. For example, by repeatedly pressing the Del key while turning on the computer, but before the operating system starts loading. There are also options when you need to press the F2, Esc or F1 key.
The BIOS existed before, and still exists today. Let's find out how to get into the BIOS settings on Windows 10.
Computers running operating systems released after Windows 7 (windows 8-10) load the operating system in just a few seconds, during which it is impossible to press the necessary key and enter bios. But this is no longer necessary: you can enter the BIOS in other ways, which we will now consider.
By the way, modern computers are equipped with an improved version of the BIOS, which is called UEFI. Necessary actions to open BIOS on Windows 10:
Alternative way
Another way to enter the BIOS when there is no access to the desktop on Windows 10, but the Logon Screen is open:
Click on the shutdown icon, press the Shift key and at the same time select the item, after which a menu of special boot options will open, in which you will need to repeat steps 6-8.
If the operating system does not load at all, then press the power button on the computer and repeatedly press the Del key (or F2, depending on the motherboard).
BIOS is a low-level program through which it will be possible to manage PC hardware and connected devices, even if the Windows 10 operating system does not function properly. You can usually access it when you start your PC. However, there are ways in which the reboot and login are carried out directly through Windows.
Keystrokes when starting the computer
The standard way to enter BIOS is to press certain keys when starting the PC. They may differ for each specific model of computer or laptop. It all depends on the BIOS version and the manufacturer of the computing device. The tables below show common options.
| For different BIOS versions | |
| AMD | Usually calling the basic I / O system is done by pressing "F1" |
| DTK | Most often, the Esc key is used to access device settings. |
| AMI | After starting it is worth trying to press "Delete" or "F2" |
| ALR | Login is carried out using the "F2" key or the combination "Ctrl + Alt + Esc" |
| Phoenix BIOS | The combinations "Ctrl + Alt + Esc" and "Ctrl + Alt + S" have become widespread |
The second table suggests options for service keys, which depend on the manufacturer of the laptop.
Reference: you may need to enter the BIOS system when you want to boot from it. It happens that this feature is disabled by default.
In Windows 10, you can reboot and get into the BIOS directly from the operating system. For this, the mode of operation in command line. You need to enter the text interface and select the option to restart the computer with additional options.
How to do it?
- In the standard Start menu, open the "System Tools - Windows" tab, and then click on the "Command Prompt" item.
- In text mode, you need to type shutdown.exe /r /o. After the reboot, a menu with startup options will appear, in which you can select BIOS.
Interesting: users have the opportunity if for some reason they are not satisfied.
You can reboot using the " Windows Settings" to get into the BIOS. To do this, use the following instructions:
- Enter the "Start" menu and select the item with the name "Settings" in the list of available applications.
- The section "Update and security" is interesting here. That is where you need to go.
- In the left column is the "Restore" link, which you need to click on.
- You need to find the "Special download options" section. At the very bottom, click the "Restart Now" button.
- The system will restart. In the "Diagnostics" section, you need to go to the "Advanced options" category.
- Select "UEFI Firmware Settings" and click on the "Restart" button.
Interesting: to, you can use the standard operating system tools or install a third-party application.
Summing up
These options will allow you to open the BIOS of the computer and make the appropriate settings. If the operating system does not load after any changes, then you can always use . It gives a chance to return the original settings, even if partitions on the hard disk have been overwritten.
BIOS used in all personal computers for user interaction with hardware, has long outlived its usefulness, and in Windows 10 it was replaced by an updated UEFI interface, which is expandable through firmware additions.
What is UEFI
The next stage of evolution in the development of the BIOS, like the BIOS itself, controls all low-level hardware subroutines, and also performs the main function of its predecessor - initializing the PC hardware components before turning it on and transferring control data to the bootloader found on the drive.
Benefits of the new BIOS with improved GUI:
- Reduced boot time - thanks to the use of thread parallelization technologies during hardware initialization (in BIOS, everything is done in serial mode), the time to check the status of hardware components is significantly reduced.
Interestingly, UEFI contains native drivers for most components, so Windows 10 can use them without forcing the user to download and install drivers on their own.
- Support for booting Windows 10 from media larger than 2TB.
To boot the computer into the BIOS, a system of partitions called MBR was used - the master boot record. Having a strictly limited record length of 32 bits, its capabilities were enough to address disk space, which did not exceed 2 TB on one medium. With the advent of UEFI, developers have implemented a new information storage format called GPT. It supports orders of magnitude larger amounts of address space.
- Unlike the BIOS, the new graphics system for realizing user control of the hardware before the command is sent to the bootloader to start Windows 10 has an improved GUI. Also, booting into UEFI, you can use the mouse as an input device, which was not in any version of the BIOS.
- UEFI has a set of the most popular applications (their list will be gradually expanded), for example, an Internet browser for navigating sites without using the capabilities of Windows 10.
- Motherboards and laptops that use UEFI support all low-level applications due to the compatibility mode.
UEFI startup
Having considered the main advantages of the new BIOS, it remains to figure out how to enter its menu in order to boot from a USB flash drive (if necessary reinstalling windows 10), change any settings in the functioning of iron or simply evaluate its graphical capabilities.
You can enter UEFI not only by the classic method by pressing a special key when you turn on the computer, as was the case with the BIOS, but also in several other ways.
- We go to "Start", where we click on the "Settings" icon.
- We go to the tab, which contains the settings responsible for updating the "dozens" and its security.
- We click on the icon labeled "Recovery", then - on the button "Restart now".
- Go to the "Diagnostics" section.
- In the advanced menu options, click on the button shown below.
The next restart of Windows 10 will take us directly to the colorful menu of the new BIOS.
If this option seemed too complicated, take the opportunity to get into the BIOS using the classic method. The only thing is that for this you will have to deactivate the "tens" instant download function.
- We go to the control panel applet called "Power Options".
- We click on the link that will lead to the configuration options for the power buttons.
- Uncheck the box next to the "Enable Fast Startup" option.
After the release of Windows 10, many users had a question - how to enter the BIOS. Usually, the word BIOS refers to the UEFI graphical interface, which appeared in new motherboards, but still fulfills the same tasks of obtaining information about the system, configuring hardware and gaining access to boot options.
V Windows system 10, the startup process is hybrid and somewhat similar to hibernation.
The system boots faster and a window is skipped in which, by pressing the F2 or Del button, it was possible to start the BIOS. Despite this, it is quite easy to do.
Entering BIOS in Windows 10
In order to log into Bios on the last Windows versions you must either start the system, or wait for the window with the password to appear. Further actions will not cause any difficulties even for novice users:
The above steps will open UEFI, which is essentially the Windows 10 BIOS.
Sometimes, for some reason, it is impossible to log into the system, however, in this case, it is possible to open the necessary settings. To do this, for dozens, you need to press the power button, and then, while holding the SHIFT key, select reboot. This action will take you to the boot options menu described above.
Entering the BIOS while turning on the device
Adherents of the old method can enter BIOS directly during device boot.
To do this, immediately after pressing the power button, you must hold down the DEL button. The device will display a message about the need to press a certain button, which will open the BIOS.
Due to the fact that new Windows it starts very quickly, sometimes there is no time left to consider which button to press, much less to do it. In this case, the question of how to enter BIOS on Windows 10 is solved by disabling fast boot.
So, how to open the menu for disabling fast boot.
- Right-click on the start button to call context menu, which has a Control Panel tab.
- It opens the "Power Options" tab, and after that "Actions of the power buttons".
- In the section that opens, there is another useful tab "Change settings that are currently unavailable."
- The last step is to uncheck the "Enable Fast Startup" checkbox.
It is worth remembering that when a discrete video card is working, information about the buttons to enable the BIOS may not be displayed, the problem is solved by switching to an integrated card. To do this, you can find the video output on motherboard and connect your device to it. These outputs can be DVI, HDMI, VGA.
When you connect an external monitor through these connectors, you switch to the integrated video card. On laptops, this can be done through the control panel of the connected video adapters.
