Getting into ASUS BIOS during startup

To access BIOS on an ASUS computer, restart your machine and press Delete or F2 repeatedly as soon as you see the ASUS logo — before Windows loads. Which key works depends on your specific ASUS motherboard model, but Delete is most common on desktop boards and F2 on laptops. You need to press the key multiple times in quick succession, not hold it down.

The timing matters. You have only a few seconds between when the ASUS splash screen appears and when your operating system starts to load. If you miss the window, let the computer finish booting into Windows, then restart and try again. Some ASUS systems also let you hold F2 while powering on from a completely off state, which gives you a slightly longer window to catch the prompt.

If neither Delete nor F2 works, check your motherboard manual or look for an on-screen message during startup that tells you which key to press — ASUS sometimes uses different keys on certain models. You can also restart, watch carefully for any text that appears before the Windows logo, and note what it says.

Key Takeaways

  • Press Delete or F2 repeatedly as the ASUS logo appears during startup, before Windows loads.
  • The timing window is only a few seconds, so you may need to restart and try multiple times to catch it.
  • If the standard keys do not work, your motherboard manual or on-screen startup text will show which key your specific model uses.
  • Once inside BIOS, use arrow keys to navigate and Enter to select options; look for an on-screen menu that shows which keys do what.
  • Save and exit when you are done — BIOS will prompt you to confirm before explore changes and restarting.

What you see when BIOS opens

When you successfully enter BIOS, you will see a menu with tabs or sections across the top — typically labeled Main, Advanced, Boot, Security, and Save & Exit. The exact layout varies by ASUS model and BIOS version, but the structure is similar across most boards. The Main tab usually shows basic system information like CPU model, RAM amount, and storage drives detected.

Navigation is straightforward: use your arrow keys to move between tabs and menu items, and press Enter to open a submenu or change a setting. The bottom or side of the screen shows which keys do what — usually something like "F1 Help, F10 Save and Exit, Esc Exit." Read these instructions when you first enter, because they tell you exactly how to move around and leave without making changes.

Do not panic if the interface looks unfamiliar. You are not expected to understand every option. Most BIOS settings are for advanced users and do not need to be touched. If you are there to update firmware or check a specific setting, find that section, make your change, and exit.

Finding and changing specific settings

Common reasons to enter BIOS include checking boot order, enabling or disabling hardware, or updating the BIOS itself. Boot order — which device your computer tries to start from first — is usually in the Boot tab. Storage devices like your SSD or hard drive, USB drives, and optical drives appear in a list; you can move them up or down to change the order.

Hardware settings like enabling XMP for RAM speed, turning on virtualization, or disabling unused ports are typically in the Advanced tab. Security settings like find Boot and TPM are usually in their own Security tab. If you are looking for something specific and cannot find it, use the search function if your BIOS has one — some newer ASUS boards include a search feature you can access with Ctrl+F.

Before changing anything, write down what the current setting is. That way, if something goes wrong, you know what to change back. Most BIOS settings have a "Load Defaults" or "Reset to Default" option in the Save & Exit tab if you need to undo multiple changes at once.

Updating ASUS BIOS from within the system

Some ASUS motherboards and laptops let you update BIOS directly from inside the BIOS menu itself, without needing a USB drive. Look for an option called "EZ Flash," "BIOS Update," or "Firmware Update" in the main BIOS menu. If your board has this feature, it will read the latest version from ASUS servers and install it automatically — you just need an internet connection and a stable power supply.

If your BIOS does not have a built-in update tool, you will need to read the update file from the ASUS support website on another computer, copy it to a USB drive, restart into BIOS, and use the Flash tool to install it from the USB. This method is more involved but works on older boards and is sometimes more reliable if your internet connection is unstable.

Whichever method you use, do not turn off your computer during a BIOS update. A failed update can leave your motherboard unable to start. If you have a laptop, plug it in before starting. If you have a desktop, consider plugging it into an uninterruptible power supply (UPS) if you have one available.

Exiting BIOS without making changes

If you entered BIOS to look around but did not change anything, press Escape or navigate to the Save & Exit tab and select "Exit Without Saving." This closes BIOS and restarts your computer without explore any changes. Your system will boot normally into Windows.

If you did make changes and want to keep them, go to Save & Exit and select "Save Changes and Exit" or "Save and Reset." BIOS will ask you to confirm — usually by pressing Y or Enter — then restart your computer. The changes take effect on the next boot.

If you made changes but want to undo them before exiting, most BIOS menus have a "Discard Changes" or "Exit Without Saving" option. Use that to leave without explore anything. You can always go back in and make the change again if you change your mind.

Troubleshooting when you cannot get into BIOS

If you press Delete or F2 and nothing happens, the most common reason is timing — you pressed too late and Windows already started loading. Restart the computer and try again, pressing the key as soon as you see the ASUS logo appear.

If you are on a laptop with a fast startup time, you may barely see the ASUS splash screen. Try restarting from inside Windows and when ready start pressing the key, or power the computer completely off, wait a few seconds, then power it back on and press the key when ready.

Some ASUS systems have BIOS security enabled, which requires a password to enter. If you set a password and forgot it, you will need to reset the CMOS battery on the motherboard (on desktops) or contact ASUS support (on laptops). Check your motherboard manual for the CMOS battery location if you go this route.

If you have a very new ASUS laptop or board, it may use ASUS MyASUS software or a web-based interface instead of the traditional BIOS menu. Check the ASUS support page for your specific model to see which method applies.

Frequently Asked Questions

What is the difference between Delete and F2 for ASUS BIOS?

Delete is the standard key for most ASUS desktop motherboards, while F2 is more common on ASUS laptops and some newer boards. Both do the same thing — they open BIOS during startup. Your specific model may use one or the other, so try both if the first one does not work.

Can I damage my computer by changing BIOS settings?

Most BIOS settings are safe to explore because they control non-critical features. However, changing CPU voltage, disabling essential hardware, or setting incorrect boot order can cause problems. If you are unsure about a setting, leave it alone or look up what it does in your motherboard manual before changing it.

How long does a BIOS update take?

A BIOS update usually takes between two and ten minutes, depending on your motherboard and the size of the update file. The computer will restart automatically when it is done. Do not interrupt the process — a failed update can prevent your system from starting.

Will I lose my files if I change BIOS settings?

No. BIOS settings control how your hardware behaves, not what data is stored on your drives. Changing BIOS settings will not delete files, though some changes may affect performance or require you to reinstall Windows in rare cases.

What does "Load Defaults" do in BIOS?

Load Defaults resets all BIOS settings to the factory standard configuration. This is useful if you made multiple changes and something is not working correctly. You can find this option in the Save & Exit tab on most ASUS boards.