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tx750w high pitched noise


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I'm having an occasional but extremely annoying issue. I built a computer two weeks ago. It includes:



AMD Phenom 9950 Agena 2.6GHz Socket AM2+ 125W Quad-Core Black Edition Processor Model


CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model TWIN2X4096-8500C5DF


ASUS M3A79-T Deluxe AM2+/AM2 AMD 790FX ATX AMD Motherboard




and an NVIDA 8800 GT.


Every so often when I turn the computer on, I get a high pitch sound, almost like a smoke detector alarm coming from the power supply. The computer comes up fine and runs great even when this sound rears its ugly head. The only thing I've been able to do is power on and off until the sound no longer comes up during power up. All my wires, cards, chips, etc. are inserted securely.


Any help figuring out what is causing this would be great.

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  • Corsair Employees

Please open the side of your case and verify the source of the sound. You can use a rolled up piece of paper or any sort of tube to listen with.


Typically, this sound is made by the video card and it was an issue with some 88** series cards. Do you have the latest driver for your GPU?

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