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Accessing a computer’s BIOS or UEFI – le crab info

THE’configuration utility BIOS or UEFI (BIOS / UEFI Setup) is a screen that allows you to configure the BIOS or UEFI of the motherboard and to modify certain parameters of the computer.

Accessible by pressing a keyboard key when the computer starts up, there are overclocking functions, the possibility of activating and deactivating certain peripherals or functions (RAID, SMART, Secure Boot), modifying the boot order …

The BIOS or UEFI configuration utility can take different forms: a graphical and a more classic.

UEFI configuration utility of an Asus PC (EFI BIOS Utility)
Aptio Setup Utility

In this tutorial we will see how access BIOS or UEFI in two different ways!

Access BIOS / UEFI from a PC

N ° 1: when starting the computer

To access the BIOS / UEFI setup utility when the computer starts up, follow these instructions:

  1. Before you begin, get ready to act quickly : You will have very little time to access the BIOS / UEFI configuration utility. You will turn on your computer and then you will have to press a key on your keyboard very quickly and repeatedly before the BIOS / UEFI hands over Windows Boot Manager (or another bootloader).

    It is by pressing this keyboard key that you will access BIOS / UEFI.

  2. Start (or restart) your PC : Pay attention to the very first screen that appears on your screen. Look if a message appears at the bottom of the screen, it very often indicates the key to be pressed to enter BIOS / UEFI. This key is often:
    • One of the function keys (e.g .: F1, F2, F11…)
    • The key Esc
    • The key Delete (Where Of the)
    On this PC, you must press the Del (Del) key to access the BIOS / UEFI configuration utility – Source: canbike.org

    If you haven’t had time to figure out which key to press, don’t panic: simply restart the PC by pressing the keys. Ctrl + Alt + Delete or use the Windows Start menu if you’ve gotten that far.

  3. On some PCs, there is no message that indicates the key to enter BIOS / UEFI. To find out, you will then have to consult your PC manual or do a little search on Google (eg: “how to enter bios setup with asus r511”).
    how-to-access-enter-bios-settings-pc-setup-search-bios-pc-access
    Google search to find the key to access the BIOS of an Asus R511 PC
  4. Once you have identified the keyboard key to enter BIOS / UEFI, start your computer and press it repeatedly as soon as the first screen appears: you may hear a confirmation beep or see a new message such as “Entering setup…”.
  5. There you have entered BIOS / UEFI setup!
    Acer PC UEFI Setup Utility (InsydeH2O Setup Utility)

Congratulation ! You successfully entered BIOS or UEFI when the computer started up. 👍

N ° 2: via Windows 11 or 10

Note: this method only works if your PC is equipped with UEFI firmware (PC after 2012). If you have a regular BIOS, it won’t work.

To access the UEFI configuration utility directly from Windows 11 or 10, follow these instructions:

  1. Open the Start menu, click the button On Off then, while keeping the key pressed Shift ⇑, click on To restart.
  2. You can also go through Settings> Updates and Security > Recovery and click on the button Restart now in the section Advanced start.
  3. The menu Advanced start Windows 11 or 10 will then be displayed. Click on the button Repair.
  4. Then on Advanced options.
  5. Click on the button Change UEFI firmware settings.
  6. And finally, click on To restart.
  7. There you have entered the UEFI configuration!
    Acer PC UEFI Setup Utility (InsydeH2O Setup Utility)

Congratulation ! You have successfully accessed your computer’s UEFI from Windows 11 or 10. 👍

Go further: BIOS and UEFI

the BIOS (Basic Input Output System) is the very first program which is executed when you turn on your computer.

This program will load all base devices and run a system check – the POST (Power-On Self-Test) – to ensure that your machine’s peripherals and components are connected and functioning properly.

If no problems are found, the BIOS finally executes the boot code for the first device in your device. start list (eg: hard drive, DVD player, USB key).

THE’UEFI is the successor to BIOS and chances are you have a UEFI PC by now.

In the BIOS or UEFI settings, you can configure all your devices (enable / disable them), set or reset the password to access BIOS / UEFI, change some features (Secure Boot, CSM) or change the boot order of your PC.

At first glance, the BIOS and theUEFI are not very welcoming but they are very easy to use.

On the other hand, you have to be careful not to do anything at the risk of creating system instabilities. Do not change a setting if you are not sure what you are doing!

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