I assume, the simple reason there are so many "audio/sound" topics here is that because when you do a google search for related problems,this forum comes up either at the top or near the top.
Try googling for "sound problem in XP" or "audio missing after reinstall" etc etc and you will see.
In this way, the more that are posted here increases the likelihood of more views on google.
<ad infinitum>
edit: @patoshik.
I would suggest that you start a fresh thread for your problem - it could get missed in this thread.
