How to Fix a Computer BIOS

by Shanika Chapman

Computer BIOS (Basic Input/Output System) problems can lead to everything from USB connectivity issues to a computer that simply won't boot. The BIOS is essentially your computer motherboard's firmware, and gives instructions to the hardware from boot up. BIOS issues are often discovered shortly after installing new hardware, and the BIOS often needs to be updated for the new hardware to function properly.


Listen to the beeps. If you are experiencing post-boot errors, which are usually in the form of beeps during the system's boot up, make note of the beeps: how long they are, how many there are and pauses between beeps.


Look up the meaning of the POST boot up beep codes in your motherboard's user manual or on (see Resources).


Check the status of your BIOS error codes on the POST beep codes list to determine if the problem resides with the BIOS itself or another system issue (such as hardware conflicts).


Check via the motherboard manufacturer's website if there is an updated BIOS revision. If available, follow the manufacturer's instructions for installing a BIOS revision. Be sure to read all steps before attempting the BIOS update, as the process can be quite complicated.


  • check You can enter your computer's BIOS, which you can typically do by pressing "F1," "F2," "Delete," "Esc" or "F10" on the first splash screen during the system's boot process. If this does not work, watch the screen during your initial splash screen and press the indicated "Setup" menu key.


  • close Be sure to check your motherboard manufacturer's website or the user's manual, as there are many warnings associated with modifying your BIOS.

About the Author

Shanika Chapman has been writing business-related articles since 2009. She holds a Bachelor of Science in social science from the University of Maryland University College. Chapman also served for four years in the Air Force and has run a successful business since 2008.

More Articles