Se non ne vieni fuori da te, potresti vedere se riesce a sistemarti il problema questo:
http://www.rizonesoft.com/downloads/dvd-drive-repair/
DVD Drive Repair is a useful application that allows you to restore your DVD (Optical) Drive if missing from Windows. In some instances, it can also help when certain applications do not recognize your drive; mostly when your computer encountered a hardware problem or a virus attack that prevents it from using the DVD Drive.