replaced audio card with another creative SB0200 and although all seems to be fine according to the device/driver checks, I still have no sound. wondering about the motherboard, downloaded current drivers but no success even after new devices are recognized. I did have registry changes after the automatic download of the microsoft patches and first lost internet wireless connections on XP and then sound. Now my sign-on is not recognized either and it's like starting anew. Working faster but no sound.