I just called Geek Squad today for the same exact problem. They fixed it about 10 minutes ago.
Start > Control Panal > System > Hardware > Device manager > Click the + next to the "DVD/CD ROM drives > Right click on the DVD ROM and hit uninstall.
Restart your computer and it will detect the DVD ROM and reinstall the needed drivers automaticly.
I've been having some problems with my DVD drive recently not wanting to recognize any DVDs.
My related hardware/software:
Windows XP Pro SP2
DVD Decrypter (copier/ripper)
LiteON DVD +/- RW drive (model : SOHW-1693S)
The drive still reads/writes CDs, but it doesn't do anything with DVDs. In the past few days, I tried to copy three DVDs. The first one copied and then played just fine, and I watched the second without copying it first just fine, with only a little bit of a hang every now and then. Later, I tried to copy the third, but it wouldn't work, and it even locked up my computer. I restarted, but the problems are still there.
I tried just playing the DVD without copying it, but it wouldn't work, either. When I'd press play, a message would appear in the top right of the display window, saying "stop." Play again, stop again. I've tried several other DVDs, but none of them work, either. Plus, the second DVD that was able to play now could not do anything at all, just like the rest of 'em. I tried playing the DVDs I've already copied onto my hard drive, and those work. So, I am thinking it is a problem relating to the drive, and not the DVD software. Perhaps drivers, or something? But I've had this drive for a long time now, so I don't understand why problems have recently cropped up.
Any help would be great... Thanks!
PS: In class today, someone suggested I update the firmware of the drive, but if that doesn't work, what should I do? Or should I not update the firmware at all? Sorry, I'm not that knowledgeable in this area.