I recently did a full system restore on my Windows XP Desktop. I connected to the internet and got all of the latest drivers for my hardware. Initially my sound worked fine but then after a little while it just stopped working. I have a Soundblaster Audigy Gamer card. I have checked all the audio settings and it is not muted. The device manager says the device is working properly. I don't know what to do. I uninstalled the card and reinstalled after rebooting and it worked again for a while but has since stopped working again. I have tried several different programs to play the audio also. Never had a problem in the 5 years of operation prior to the restore. Please help. Thanks.