BIOS (Basic Input/Output System) is standard boot firmware installed on all PC motherboards. It is the first code the computer runs on startup that tells the system important things like which hard drive to use, how much RAM there is, and overall what state the system is in. Basically, the BIOS prepares the system to load software like the operating system (Vista, XP, etc). Entering the BIOS depends more on your computer manufacturer than what version of Windows you have. Writer Bio
