i am Recently having sound problems with my new computer just in the past week or two. im a bit more computer minded then the average Joe. so i've done all the offline tech support options allready. heres my problem when i start up i have sound.. usally for about 15 minutes or so and on some occasions for a few hours. then no sound at all.. untill i shut down the computer and get the shut down sound. there are no hardware conflicts nore is it overheating during its on time. this all worked perfectly just befor.. there are no Virues with the latest updats & scans by Norton 2004.