when computer system is start which testing is perform first

Dhaval Jain's picture
Dhaval Jain asked on November 17, 2018 - 5:12am | Replies (1).

when we power on the system that time system do self testing

1 Answer

Jerry Penner's picture

I think you're referring to POST, or Power On Self Test.

The computer runs through a number of hardware self-checks to ensure it's running at a minimum standard in order to proceed with loading any type of operating system. Typical checks are availability of RAM, video card, keyboard. If any of these are missing or defective, the computer issues a series of beeps. Each manufacturer has its own set of beep codes. You can find these by Googling your motherboard manufacturer's name and the term "beep code".

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