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HX620W whine - 8pin 12vATX issue


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I've had a high pitched whine since I bought my computer a year ago and have tried to diagnose it with no luck.


The high pitched chirping/whine changes sometimes with my mouse movement buy not all the time, it's a Logitech wireless mouse.


It isn't anything to do with GPU or hardrives. I disconnected everything except the motherboard and it still made the sound.


The sound does stop when I disconnect the 8pin ATX12v connector, I connected the 4pin cable and it made the same sound.


So motherboard or cpu but not sure which one.


Any ideas?

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