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'''BIOS''' (basic input/output system) is a firmware program run on PC, which initiates during the booting of the [[computer]].

'''BIOS''' (basic input/output system) is a firmware system which runs all modern computers. It initiates during the start up of the [[computer]], and is responsible for initializing the computer's hardware, selecting an [[operating system]], and starting that system.<ref>http://smallbusiness.chron.com/purpose-bios-computer-69278.html</ref> Additionally, if the main [[operating system]] encounters a serious problem which results in what is labeled a "hard stop error" (sometimes less accurately called a "crash"), the computer will usually revert to the BIOS to display an error message.  On PCs, this kind of message is displayed as white text on a blue background, and has become known as the "Blue Screen of Death" or simply a "Blue Screen."

[[Category:Computers]][[Category:Operating systems]]

 

 

[[Category:Computers]]