How to Check BIOS in Asus

By Jeff Grundy

Asus periodically releases BIOS (Basic Input/Output System) updates for their motherboards that address problems and make the system board more compatible with various types of hardware. BIOS updates can also help correct hardware-based problems in the operating system.Before you attempt to update the BIOS on an ASUS motherboard, it is important that you first know the model revision number and BIOS version. This information will determine which BIOS revision file you need to update your system.

Things You'll Need

  • Asus motherboard
  • Phillips screwdriver
  • Pad and pencil

Step 1

Shut down the computer and turn it off. Unplug the power cord from the computer and all other attached cables.

Step 2

Remove the screws on the back of the computer that hold the side cover panel in place. Remove the side cover panel and set it aside.

Step 3

Locate the ASUS model number printed on the motherboard. The position of the printed model number varies; however, the model number print is in large white letters. (e.g., ASUS P4B or P4T-EM). The "ASUS" brand name may or may not be present.

Step 4

Write down the model number. Also, look directly beneath the printed model number and locate the model revision number. The letters "REV" will precede the number (e.g., REV. 1.03).Write down the revision number as well.

Step 5

Replace the panel cover, reinsert the screws and tighten them with the screwdriver. Reconnect the power cord and other cables. Power-on the computer.

Step 6

Press the "Pause/Break" key as soon as you see the initial boot screen. This will halt the boot process.

Step 7

Locate the ASUS model number on the screen. It will be on the third line of text and is directly beneath the line with the BIOS copyright information. Look for the BIOS revision number. For, example the P4T-EM motherboard might display the following model and BIOS information: "ASUS P4T-EM ACPI BIOS Revision 1002."

Step 8

Write down the BIOS revision number. You have successfully recorded all information pertinent to the motherboard BIOS. Press the "Pause/Break" key again to resume booting the computer.

Tips & Warnings

  • After you have the model, board revision and BIOS revision information, visit the ASUS support site and download the updated BIOS file revision for your motherboard (if you are having hardware issues).
  • Do not update the BIOS version on your ASUS motherboard if your computer is running smoothly. You should only perform a BIOS update if you are having hardware compatibility problems or you are sure that the BIOS will correct operating system compatibility issues.