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HX850 Buzzes


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I got my HX850 Couple days ago and put on my new rig. From yesterday, I noticed my PSU had constant buzzing sound as soon as I turned on computer. I was able to hear it over 4 case fans.. I disconnected video card, and the buzzing sound was still there.


I did the paper clip test with a case fan, and everything was quiet. Does this mean my PSU is fine and the buzzing sound was due to my MOBO? Thank you!


I've disabled the EIST in the BIOS.


Update: verified on a known working rig, and the buzzing sound still existed. I will do a RMA.

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