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Originally posted by 12m8keall2c
As for the high-pitched whining, I'd have to say it sounds like the power supply. The next time you turn it off, put your ear next to where the power cord plugs into the back of your PC. I think you'll find that the whining is coming from inside the power supply.
Originally posted by HCLogo
If I remember correctly, the whining is caused by a faulty capacitor (usually), ...