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Slight whining sound coming from CPU

post #1 of 3
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I just completed the rig in my sig about 2 months ago. A few weeks ago I started noticing a slight "whining" noise coming from my CPU. It sounds a lot like a fan on high rpm but the thing is this sound was not there before because my roommate and I started to notice it just recently and its very obvious.

When I remove the window panel of my 600t case, the sound pretty much goes away. You can hear it but just barely. It's only really noticeable when you close the case, so the sound is clearing coming from inside one of the fans but I can't pinpoint exactly which one. Also, the sound comes and goes. Sometimes its a lot louder then other times and it has nothing to do with the temps inside the case because the sound levels will change while my cpu is idle (I've witnessed it, the sound will come all of a sudden when I haven't even touched the computer).

I have my fan controller set to the lowest, but even at he highest the volume of the sound is about the same. What should I try to do to find the source of the sound? Should I unplug each fan one at a time, and even if I find the source can I do anything about it, or would I have to replace the fan? Just worried because the sound was clearly not there before and it is a pretty annoying buzzing/whining sound at night.
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post #2 of 3
If you are trying to pinpoint which fan it is, the thing I normally do is put my finger on the smooth centre of the fan for just a moment to slow it down, you can normally tell where the noise is coming from that way. (Disclaimer: No idea if this can damage fan, do at own risk, but never caused me a problem).

Once you find it, you can look into swapping it out for a new one or what ever.
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My Current Rig
(18 items)
 
My Work PC
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My Dream Rig
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CPUMotherboardGraphicsRAM
i5 3570k Gigabyte Z77-D3H AMD Sapphire 7970 3GB 8GB Kingston HyperX DDR3 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo WD Caviar Black 500GB Samsung BD-ROM Noctua NH-C14 Dual Fan 
OSMonitorKeyboardPower
Windows 7 Home Premium x64 BenQ XL2411z 144hz Filco Majestouch (MX brown) Antec Quattro 1000w 
CaseMouseMouse PadAudio
Antec P182 Logitech G400s Steelseries QCK Heavy Beyerdynamic DT770 Pro 
AudioAudio
Fiio E9 Headphone Amp X-fi XtremeGamer 
CPUMotherboardGraphicsRAM
AMD Phenom 2 X2 550 3.1GHz ASUS M4A77 HD4350 4GB Crucial Ballistix  
Hard DriveOptical DriveCoolingOS
WD Caviar Blue 250GB Sony DVD-RW Tri-Cool green LED front fan Windows 7 x64 
MonitorMonitorKeyboardPower
Samsung 22" 16:10 Acer 19" 4:3 Saitek Eclipse 2 OCZ 500W 
CaseMouseMouse Pad
Antec 300 MX518 QCK+ 
CPUMotherboardGraphicsGraphics
i7 2700k Asus Maximus IV GENE-Z Sapphire HD 6970 2GB Sapphire HD 6970 2GB 
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PowerCaseMouseAudio
Antec Quattro 1000w (already own) P182 (already own) Logitech MX518 (already own) Asus Xonar D2 Ultra Fidelity 
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post #3 of 3
It may be one of your fans not working with your fan controller... some fans just make weird noises when you use them with a controller.
    
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