Hi guys, I am back again but unfortunately, I am back with a problem

Now this doesnt seem to be making anysense to me at all, the other day my DVD drive just stopped showing up in My computer, its a DRW-24B1LT, I checked the device manager and its showing up but with an exclamation mark on it but not reporting any problems, I checked the connections in the case and they are secure, I have the latest firmware and all motherboard drivers seem to be ok, I have done many virus scans and the PC is clean from that as well. I have reinstalled windows 7 (ultimate x64) and it installed successfully then it suddenly stopped showing up again. Virtual drives also don't show up, Daemon tools and DVDfab virtual drive.