A driver issue. Most common when the owner accepts a Microsoft offered driver. Fix? Go get the driver from the card's maker.
I booted up my computer on thurday, and i had a really sqeaky problem, my computer runs on Xp, it's all stock parts, it sounds like it's fast forwarded.i tried three sets of music oputs, one that went to my stereo using a aux adapter, second one was the stock speakers, and the third one was a pair of headphones. each one had the sqeaky sound, it still does it.