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My computer is less than 6 months old and ever since I got it the power supply sometimes makes a whining noise. Even when the computer is off. It's a 600W ATX Corrsair. Is there anything I can do about it? I've got it plugged into a UPS.

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marked as duplicate by bwDraco, Kevin Panko, Matthew Williams, music2myear, Hennes Oct 30 '14 at 11:55

This question was marked as an exact duplicate of an existing question.

Is it a fairly high pitch noise? Mine has a noise when shut off as well. I've got a CX500 Corrsair which does the same thing. I think it might be some capacitor that just makes that sound under "shut off" conditions. Get a powerstrip with an on/off button? That's what I did. Btw, my gfx also makes similar noises under high frequency loads when it runs. – Zoomulator Jul 2 '12 at 9:44
Give it a cookie! Or pick it up and comfort it, it might just be missing you. – lornix Jul 2 '12 at 11:23
If it's a high-pitch noise, then the PSU is probably under-loaded (i.e. a 600 Watt power supply is too much capacity for the low-power draw of the PC). ATX PSUs tend to be tolerant of small loads, but there could be exceptions. Try connecting a Kill-a-Watt meter to measure how much (or little) power that system really uses. – sawdust Jul 2 '12 at 19:11
@DragonLord bizare that question is the same as mine (and I asked mine 2 years earlier) and it got 24 upvotes – Celeritas Oct 28 '14 at 21:19

maybe this will help...

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Please give a little detail about what they say and why they're useful. – KronoS Jul 2 '12 at 10:07
Neither link seems applicable. The first links seems to be about fan noise. The second link is about electrical noise, not audible noise. – sawdust Jul 2 '12 at 19:05

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