Architecture 1 min read

Power-On Self Test

Last Updated May 24, 2021 1:52 pm

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.

Was this Article helpful? Yes No

Thank you for your feedback. 0% 0%

About the author

Webopedia Staff

Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.