My grandsons were fighting in the room where the computer is. Guess what! they cracked the tower case (grumble, grumble, grumble). No other damage it still worked fine, just didn't look good.
So I've been and bought another, fitted all the internals, turned on and it works fine other than the combi drive, won't work at all. When I double click my computer it's not there. It works in my daughter's so it's not the drive that's at fault.