power-on self test - Webopedia.com

November 29, 2009

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power-on self test

Last modified: Tuesday, May 20, 2003

Abbreviated POST, a diagnostic testing sequence run by a computer’s BIOS as the computer’s power is initially turned on. The POST will determine if the computer’s RAM, disk drives, peripheral devices and other hardware components are properly working. If the diagnostic determines that everything is in working order, the computer will continue to boot.

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