Loud pops and feedback noise

Hi All,
I have been having bad sounds and noise problems since I first installed Itunes 7. The first and most annoying problem is when I play a song or sample, and the song stops, or I hit pause, the program begins playing this incredibly loud and annoying electronic "feedback" sound (almost like a bad techno song beat). It will keep "playing" until I start another song. I just updated to the newest version of Quicktime (7.1.6) and that did not solve the problem.
The second and less serious problem is that when I am inporting a CD, and the songs start playing automatically, the sound is at a very nice volume. But as soon as the import ends, the volume drops substantially (often right in the middle of a song).
Any and all help would be greatly appreciated!
Thanks folks.
Home built Windows XP sound card is a Sound Blaster Audigy 2

just doublechecking. have you worked through the possibilities from the following document?
iTunes and QuickTime for Windows: Songs and other audio don't play correctly

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And the popping and crackling even continues after I exit the game, even in Windows, but to a lesser extent. And it seems to quit completely after a few minutes. Very strange.
Also, I tried disabling SLI and it did not seem to make a difference.
What is going on here? I just want to play this game with 5.1 surround sound and, preferably, EAX, because I do like the way it sounds. It's just that I can't play with EAX because it starts jacking up after awhile.
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Originally Posted by Thalyn
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[In Summary]
-HP Pavilion DV6-6b50sa Laptop fan had loud whirring/grinding noise
-Fan was replaced
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Any help would be great, I have tried to include as much information regarding the problem as I can but if there is anything else needed dont hesitate to ask and I can try to provide such information as required.
Michal.

Also, when the fan is running at higher speeds the whirring/grinding noise is quieter and less noticable than when it is running at very low speeds... When running at very very high speeds (while playing games) the fan sounds almost the same as my old one when it was still working, and at high speeds its more a whirring humm... Then at lower speeds it goes back to a more low whirring/grinding.
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Loud pops and feedback noise

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