The BIOS (Basic Input/Output System) is a chip on the motherboard that boots the computer and allows Windows to communicate with the hardware. Although the risk of doing so is considerable, you may need to update your computer's BIOS for it to work with new hardware.
BIOS is a prgram that starts when you turn on your computer. It checks all of your hardware, hard drive, cd rom, cards, etc. to ensure they all have power and are working. It has several different categories, you can see your BIOS by paying attention to the screen when it first starts up. When you see "*** f2 for system" or something to that affect then *** the key and you will go into your BIOS. Just DO NOT make any changes, it will screw up your computer big time if you do not know what it all entails