What motherboard are you using? What onboard sound chip do you have. I have a soyo dragon as well as on asus a7n8x-e both have the same issue with my 2600 mobile. I beleive it had to do with heat issue with mine, because once I added different northbridge cooler, then put the old northbridge onto the southbridge, and then, found the audio chip and put a small heatsink on that, all my problems went away, but I had all the heatsinks already. Going to buy them would have run 20 bucks, which at that point, you can get a sb live off ebay for that.