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.

Aug 2, 2022 · 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.

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 hardware to ensure …

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, POST. …

Jan 9, 2024 · Power-On Self Test is a special set of ROM routines that run whenever a PC is booted. The power-on self test (POST) is designed to test whether system components are functioning …

Power-On Self-Test (POST) refers to the routines that run after a computer system is powered on. These routines are designed to check system resources and identify common hardware errors …

Jan 21, 2025 · In the realm of computing, the Power-On Self-Test (POST) is a critical procedure that occurs when a computer is powered on or reset. This diagnostic routine is fundamental to the …

Oct 23, 2025 · So, what exactly is the POST, or Power-On Self-Test, looking for when it starts up? It's not just a superficial glance; it's a comprehensive check of your computer's foundational hardware.

Purpose of POST: POST stands for Power-On Self-Test, a diagnostic process initiated by the computer's firmware upon powering on to check system hardware. Process Overview: POST occurs …

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 issues.