Sound Card Drivers
Don't know if this is any help....
A couple of months ago I re-installed XP on my home built late 2003 vintage AMD 2700+ machine (still my favourite PC actually...)
No sounds of any kind on this until I sort of remermbered that the onboard sound needed the original motherboard installation disc (included the needed drivers) - problem fixed! (although I'm sure if I knew what I was looking for, I could have found them on the web)
Regards
Martin