BIOS provides the boot-up process for a computer. It is part of ROM.

Most computers will use F1 or the DELETE key to initialize the BIOS console. Most computers are shipped with AMD these days.

My computer's BIOS was made by American Megatrends, one of the main producers of BIOS systems for personal computers. I think that almost all of my PCs have used their BIOS.

BIOS setup is accesses most of the time by pressing the DEL key on bootup. On some computers it is F10, F2 or rarely F8.

BIOS stands for Basic Input/output System. It is software that is built into computers. A BIOS that can be reprogrammed using software is called EPROM.