i kind of had the same problem this morning, i went to burn a cd with Nero and it kept asking me to save it as an image, couldnt figure out why. Then i realized that My Computer no longer showed my DVD/CD drive. I opened up the device manager and the drive has a yellow hazard/exclamation point sign next to it. The properties menu gives this explanation:
"Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)
Click Troubleshoot to start the troubleshooter for this device."
Troubleshooting told me to try uninstalling the drive then reinstalling, then to check for an update driver. I tried both, Windows could not find a driver for it.
Not sure where to go from here, any help would be great.