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PC ER: Loud Pop Followed By System Failure

Symptoms:

PC emits very loud “pop” noise four times over a span of 5 months yet everything is working fine. Suddenly, without warning, the computer shuts off completely. Upon reboot, the system barely passes POST (Power On Self Test, or BIOS (Basic Input Output System)) without shutting off again. I receive a frantic phone call. “What’s wrong? Why doesn’t the computer turn on anymore? I didn’t do anything!”

System Background:

This is a system that I built for a law firm, no fancy components were necessary except for the RAID 1 for backup in the event of a hard drive failure.Most of the components were new and in excellent condition.

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