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Master
5,051 Answers
- Posted on May 04, 2012
Re: Unplugged computer plugged back up loud humming
The humming could be coming from one of the fans or the disk drive. Sometimes if you just tap the case the humming will quit. If there is a CD in the cd drive sometimes it will hum.
Don't worry about the humming, if it starts clicking, that's when you worry.
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