[b34ns]

every time i turn on my pc i being to hear this high pitched screech, at first it is tolerable but as a couple of hours pass by it begins to drive me insane.

all i know is that its definitely not coming from my speakers, it cannot be anything to do with dust problems, since i got this new machine just a couple of days ago (custom built), and its not coming from my screen.

I've tried reconnecting everything in the machine but that did not work. any help/suggestions on this would be greatly appreciated thanks.

my system specs are:

• Intel Core 2 Quad, Q8200 @ 2.33ghz
• 2Gb ddr2 ram
• 9600gt, 512mb
• LG 22' widescreen
• DVD Drive
• MSI P43 Neo3 v1.1
• 2 150GB Hitachi HDDs

[BruinBeer]

Are you absolutly sure it isn't one of your fans? Graphics card fans sometimes make funny (and irritating) noises
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[b34ns]

yes im sure, i've unplugged my main fan and secondary fans both at the front and back of my PC. but the sound still persists. I'm pretty sure its not my graphics card since I've had it before this current upgrade and it didn't make any funny noises back then.

[BruinBeer]

Then I assume you checked the PSU too. You know, running it alone.
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[win2kpro]

If the high pitched whine is not coming from a fan, then the problem is generally a defective capacitor or capacitors, either motherboard, power supply or video card capacitors.

Years ago I took a mechanics stethescrope and cut and drilled about a 1 1/2" piece of solid plastic dowel to put over the end of the stethescrope metal rod so I could hold it right up against capacitors or the side of fans to locate the source of noise.

If you don't want to invest in a stethescope just take a wooden dowel and hold one end next to your ear, and the other end on the various components.

[b34ns]

BruinBeer how would i test the PSU alone? unplug it from my machine and then flip the switch? i thought that wouldn't do anything.
and win2kpro where would i be able to obtain one? is there any other way of finding defective capacitor?

[BruinBeer]

What I normally do, I unplug the psu totally and then I short the green wire on the 20/24 pin plug with one of the black ones to let the psu run on its own
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[win2kpro]

You can get a mechanics stethescope from most any automotve supply store. I don't recall where I got the plastic dowel, but you can get a wooden dowel at any building supply store and they may well also have plastic dowels. The plastic just works better than wood since it amplifies the sound better.

You could even make the plactic end out of the end of an old retractable ball point pen.