A few months ago, my CDRW drive decided to die. All well and good, as I still had my DVD drive to do things. But now my DVD drive has decided to die as well and now I can't even find them on the My Computer menu. They don't show up in the device manager either. I just updated and scanned with AVG, so I'm fairly certain it's not a virus. I can't find them in hardware profiles either. What could be causing this?