It issues a number of short beeps.
easy
POST will indicate error messages by a series of beeps or a series of lighted-up LEDs (depending on your computer).
It places an error message in the BIOS.
issues a number of short and long beeps
You would use a caret (^) inserted above or below the error to indicate it needs to be corrected.
During the POST a single beep indicate normal operation of the PC. hope this will help cathrine mauchi
A typographical error for "post meridiem" meaning afternoon.
Error message on monitor
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POST means "Power On Self Test", and is a series of tests the computer will conduct before loading your operating system (i.e. Windows). Most desktop computers that pass POST will sound a single short beep. If POST fails with a "no video" error, that probably means the computer was unable to properly initialize the video device during POST. You will likely need your computer serviced, in this event.
cmos
system board