Calneon Posted September 5, 2009 Share Posted September 5, 2009 Even when my PC is turned off, there is a low buzzing noise coming from my PSU which is easily audible for anybody in the room. I have quite a demanding system which is probably pushing my HX520 to the limit, but I don't think it's based on load because the noise doesn't change much (there is a bit of difference) between when idle and when running Furmark and Intel Burn Test at the same time. This even happens when my PC is turned off, so I have to unplug it or use the switch on the PSU when I turn it off because I think it must be drawing power even when the PC is turned off. I think it might be a faulty transformer that's staying on and making this noise? Otherwise, the functionality is fine, and i'm quite impressed it runs a 4Ghz 920 and an OCed GTX280 both at max load without dying. Just the noise is quite annoying. EDIT: Just a bit more info, the noise is a lot quieter, but still audible when the PC is turned off. When I boot up, it only becomes louder when the Vista logo appears after loading. Disabling C1E and EIST also didn't help. Link to comment Share on other sites More sharing options...
Calneon Posted September 6, 2009 Author Share Posted September 6, 2009 This has got more high pitched now, when idling. It's about 1 second on off high pitched buzzing noise. More annoying than the low pitched one. Link to comment Share on other sites More sharing options...
Calneon Posted September 7, 2009 Author Share Posted September 7, 2009 Was my external hard drive, ignore this thread. Link to comment Share on other sites More sharing options...
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