Cant Find DVD ROM Drive

[qanda]This thread is about the Intel Slim-line DVD-ROM. Click here to see full specs[/qanda]Ive got a dvd rom drive installed on my computer, and its been there since i got the computer November last year. All of a sudden its stopped working. I realised this when i went to burn a CD and it said that it couldnt find the Cd Drive. When i click on computer (im using Vista Basic), it only comes up with my hard drive and doesnt show and CD/DVD ROM drive. Whats happened? Please Help, I didnt change anythin or install anythin it just stopped working. I Tried Installing Drivers from CD but it wont even run the Cd when i put it in, or even let me see it then from Computer.
Appreciate any help you can give me.
Cheers, Jay