The sound card driver is not the correct one for your system.
I'd look for you but you missed that forum note.
I don't know what I downloaded or what I changed. All I know that when I play music on my PC it sounds like the chipmunks are singing. I think it is a problem with my sound card, because I tried all of the suggestions given by microsoft and none of them worked. I would like to avoid a Sytem restore, but this looks right now as the best solution. If somthing similar has happened to you, or you know how to correct this please do tell. Thank you.