FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -POST sequence is executed irrespective of the Operating System and is handled by the system BIOS. Once the tests are passed the POST would generally notify the OS with beeps while the number of beeps can vary from system to system.

Detailed explanation-2: -Problems During the POST Errors might come in the form of flashing LEDs, audible beeps, or error messages on the monitor, all of which are technically referred to as POST codes, beep codes, and on-screen POST error messages, respectively.

Detailed explanation-3: -The system BIOS provides a basic power-on self-test (POST), during which the BIOS checks the basic devices required for the server to operate. The progress of the self-test is indicated by a series of POST codes.

Detailed explanation-4: -CPU and Register Test CPU test is one of the first tests in POST. This test checks the internal working of the CPU. This test is run by executing processor instructions and then verifying the output of the instruction. All the processor registers are also exercised in this test.