My sound card is not working. I recently rebooted my computer, and the sound worked fine before I did that. Checked inside and everything was fine, the wires were fine and in the right places. When I went under the sound options inside the control panel, none of the options were availible, it said "No Audio Device" I obviously know what that means, but I dont know how to fix it! I bought it complete, and the sound did work then. I have no idea what my sound card is, or how to fix this problem. Please help