19/08/2016
The computerPOST(power-on self-test) checks a computer's internal hardware for compatibility and connection before starting the remainder of the boot process. If thecomputer passes the POST, the computer may give a single beep (some computers may beep twice) as it starts and continue to boot. However, if the computer fails the POST, the computer will eithernot beep or generate a beep code that tells the user the source of the problem.
