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What would make a noise in a PC on graphics operations on a passively-cooled system?

Every time i scroll (either with the scroll wheel or scroll bar), and it affects a large part of the screen, my laptop cheeps/whimpers. It's a quiet and high sound - like "tsiiii"...
It has nothing to do with the sound card nor the internal speaker (These are disabled). I know some people that are faced with the same "issue".

Sound's weird, i know. Any ideas?

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Zeemee
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  • with you on that one @Arjan – RobotHumans Dec 03 '10 at 11:55
  • (Still +1 for this very question, as the wording will make more people find it.) – Arjan Dec 03 '10 at 11:57
  • I have never seen this happen myself, but I remember reading somewhere that it can be stopped by turning off power saving in the BIOS options (not really something that you would want to do on a laptop). – paradroid Dec 03 '10 at 14:05

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I had the same question a few months ago, and the answer I got was that it was most likely the voltage regulators on the graphics card

madmaze
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