I have seen half a dozenor so PCs that haveall of a sudden lost their CD / DVD Drives?
Looking into the Device Manager, I see that they are there, but the drivers have not been installed or there isa problem ( NO WAY? )
Reinstalling Drivers does nothing!
I have accepted that its some infection that could not be killed off, and an FnR does the trick.
Also, when this has happened, the USB Also went south too, so is your USB ok?