I jut got my 3870 today and installed it in the board in my sig. After doing the hardware and software install (from disk since it had 7.11 and 7.12 messes with colors) I completely lost on board sound coming from the motherboard. My question to you all is if the ATI HD sound thing has hijacked my sound and made it the primary device or something. Or how can I go about getting sound back up? Nothing is muted.