Did this a few times after getting sound working again. The first time I opened AH it said "didn't find sound device, no sounds enabled now" or something to that effect. After reinstalling of drivers and reopening it did not give me that but I lost sound anyway. I'm not sure what all I've done now but I've managed to both reinstall the drivers for the billionth time AND get AH to have sound as well as the rest of my computer. I guess I'll hold out that this keeps up, almost afraid to restart.