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Strange highfrequency sound from my PC.

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paiste

Junior Member
Okey, I installed an old classic, Starcraft and Starcraft: Broodwar. When I played Broodwar I noticed a strange highfrequency sound, I opened up the side of my case and put my ear about 30 cm from my P182B. It's very hard to figure out the source of the highfrequency sound. It's only appear when I move the the camera over diffrent places ingame and even in the menu when the game ask if I want to play original Starcraft or Starcraft: Broodwar. When I point on Broodwar, that sound appear. It's kind of hard to explain...

My system:
Antec P182B
Antec Earthwatts 380W
Gigabyte GA-M56S-S3
AMD X2 4400+ @ 2.55Ghz
4Gb RAM Corsair Value 5300
Sapphire HD3870 (With Arctic Cooling Accelero S1)
Hitachi 250Gb PATA
Seagate 7200.10 320GB S-ATA
Western Digital 500GB PATA
Vista Home Premium SP1 32-bit

I'm pretty sure that it's not my harddrives, I've put my ear just a inch from my harddrives and that highfrequency sound is pretty weak at the harddrives (cause my harddrives is at the bottom in my P182B), and it's louder when I put my ear right above my motherboard. It sounds like when a CD spinns up in a CD-reader. And I know that it's not my DVD-reader, cause I use external reader, and it's not near my PC.

I also asked at another forum, and a guy said that PSU can make this sound and even graphic card can make this sound too. So...

What do you think?
 
I'd bet it's the PSU.

I stuck a new Earthwatts 500W in my System and I would get the same High frequency sound you're talking about playing certain games. It would occur most notably during graphical transistions.

I haven't noticed it for quite some time now so I expect it's just a breaking in period. I've seen on product reviews for these PSU's that this seems to be common on these models.

 
I would agree it is the PSU .. They run at about 40Khz or so and if any of the coils is loose (usually glued to the circuit board), it can cause a squeal .. bad caps in the power supply can also make it do that or maybe the bearings in the PSU fan are starting to fail.
 
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