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.

  • 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, 2012 at 9:44
  • Give it a cookie! Or pick it up and comfort it, it might just be missing you.
    – lornix
    Jul 2, 2012 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, 2012 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, 2014 at 21:19

1 Answer 1


maybe this will help...



  • 1
    Please give a little detail about what they say and why they're useful. Jul 2, 2012 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, 2012 at 19:05

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