Bizarre sound coming from my speakers...

Hi,

I am running Windows 7 (Build 7077) on an AMD Phenom II 720 with an ATI 4890 video card.  Everything runs smoothly except for one weird thing.

At totally random intervals, I hear the following sound over my speakers:

"chuuuu-chunk-chunk-chunk"

It's like a piece of paper is stuck in a fan blade.  Have NO IDEA what could be causing this.
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MitchellVIIAsked:
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☠ MASQ ☠Commented:
Also check for local interference - something as unlikely as a heating circuit coming on in the house may cause a brief spike in the electrical supply which may not affect your computer but could cause  "noise" that your PC speakers are amplifying.
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bcoyxpCommented:
have check the hardware itself? maybe there really is something stuck on your machine's fan.
such occurrence may also be the result of the operating system throttling the power of your CPU, with such event, it triggers/controls the cpu fan to run more.

but first, do check your machine's physical status. this could be the cause of dusts/dirts.

regards,
 
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MitchellVIIAuthor Commented:
Thanks,

No, it is none of that.  the wierd part is that the sound is actually coming FROM my speakers.  maybe they are haunted.
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nobusCommented:
you could try another sound card, and check if the sound comes through that also.
you can also disable all windows sounds
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CallandorCommented:
Check your windows event sounds, in case you are being notified that something is happening.  Keep open a task manager with processes ordered by highest cpu and see if something pops to the top when it happens.
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MitchellVIIAuthor Commented:
Actually, i think the sound may be coming from my new monitor and not the computer at all.  Now this monitor has speakers which I have not hooked up and ths sound seems to be coming from the back, where the speakers are.  My guess is that for some reason, occasionally the speakers are putting out this weird sound.

I'll have to look into how to disable them.
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CallandorCommented:
There's probably an onscreen menu in the monitor itself.  It's probably picking up extraneous RF that MASQ was referring to.
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nobusCommented:
its windows 7 chunking away  ...
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MitchellVIIAuthor Commented:
well i turned down the volume on the monitor speakers and so far anyway, no weird sounds, so maybe that was it.  We'll see.
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nobusCommented:
then you won't hear other sounds either...
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nobusCommented:
...unless the volume was maxed out ? ...
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MitchellVIIAuthor Commented:
I don't use the monitor speakers.
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nobusCommented:
ok - right then..
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