A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on.

Jun 22, 2023 · 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 …

Aug 2, 2022 · What is Power-On Self-Test (POST)? 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.

Jun 3, 2020 · 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 …

Apr 26, 2025 · The Power-On Self-Test, commonly known as POST, is a critical part of a computer’s startup sequence. This built-in diagnostic program checks your computer’s …

Sep 7, 2025 · Short for Power-On Self-Test, the POST is a test the computer must complete to verify all hardware is working properly before starting the remainder of the boot process.

Feb 21, 2025 · The Power-On Self-Test (POST) is a vital process that begins when you turn on your computer. This diagnostic routine is the first step in booting your system. The BIOS …

May 5, 2023 · POST, short for power-on self-test, is a series of tests and procedures your PC runs through before loading the operating system. These tests help verify the health of your …

Dec 18, 2023 · When you start up your computer, it goes through a series of self-diagnostics to make sure everything works properly. This process is called Power On Self Test or in short, …

what is the power-on self test (post)? the power-on self test, or post, is a diagnostic routine that a computer runs every time it’s powered on. think of it as a pre-flight checklist for your machine.