to start off here are the basics of my system: xp pro sp1 pent 3 1.2 GHz 512 ram i just installed a new soundcard to see if a broken sound card was the problem but it didn't help whatsoever. the new soundcard that i am currently using is from Mad Dog multimedia. it's a 5.1 6 channel card... system devices lists it as CMI8738/C3DX PCI audio Device. Everything is unmuted and plugged in correctly. I've had this problem almost a year now and have tried to fix it multiple times. this system has had sound beforeso i know there is a way to fix it but am at a complete loss as to how. I read about a similar problem on a different thread on this site and it said to disable the mobo onchip USB in BIOS. I looked for it and didn't see that setting anywhere in BIOS and i'm not even sure if that would help. It seems like there used to be an onboard audio system on the mobo i have currently but is no longer there. i'm not really sure if that is the case tho. I also have Legacy Audio drivers and Media control devices and AUdio codecs listed in device manager if that helps at all. if any additional information is needed i'd be happy to supply it. thanks in advance for any advice you can possibly give.