COMPUTER FUNDAMENTALS

Detailed explanation-1: -A Power-On Self-Test (POST) is an operation initiated by a computer after it has been turned on but before it boots up the OS.

Detailed explanation-2: -POST, short for Power On Self Test, is the initial set of diagnostic tests performed by the computer right after it’s powered on, with the intent to check for any hardware related issues. Computers aren’t the only devices that run a POST.

Detailed explanation-3: -Power-on self-test (POST) performs tests on workstation core components such as CPU and memory. POST checks low-level interaction between the CPU, caches, memory, JBus, and the I/O bridge chip. Typing the post command from the ok prompt initiates tests that check the CPU, I/O bridge chip, and memory modules.

Detailed explanation-4: -A POST test card displays error codes generated during the Power On Self Test. It’s used to identify problems that can be detected as the computer is starting up, so it’s helpful when your computer won’t turn on.

Detailed explanation-5: -No POST-The Power On Self Test (POST) is a set of procedures that a computer runs through each time it is turned on. It ensures that all of the system’s hardware is working properly before trying to load the operating system. If the computer does not pass POST, it will not boot.