i had sound on windows vista and downgraded to windows xp pro and now have no sound... i have my proper driver installed and up to date but i am getting a device manager error code 10... says it cant start... i have tried uninstalling and reinstalling it plus i have tried rebooting after the install... still error code 10... any suggestions??? plz help... a guy at a computer repair shop said he couldnt even figure it out...