My laptop has Vista Service Pack 2 installed and for some reason the optical drive is no longer recognized. When I put a disc in to play, I can hear the head searching but then nothing else happens. Opening up Computer with Windows Explorer, it shows the C: drive and nothing else. It used to show C: drive and D: drives. Opening the Device Manager, shows the drive is there and the General tab says that it's working properly.
I checked the web for solutions which mentioned checking that the audio player is enabled which it is. It also gave a solution about going into the registry and "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}" which I did but the Upper Filters it wanted me to delete wasn't listed so I exited the registry.
I can play MP3 or WAV files okay. If I plug in an external USB disc drive, a CD plays fine but then put it in the optical drive and it doesn't. I downloaded Rkill just this morning to check things and after running, it showed that it had terminated the "TODDrv.exe" file. I was going to delete the file since it showed the file as "(PID: 3232) [WD-HEUR]" without quotes but decided to first check the web and found that it's a Toshiba program associated with an optical drive so left it alone.
I shut it down and restarted thinking that file would then be active again. Anyway, I'm at a loss as to what may have happened. The Rkill program didn't show any other anomalies which is why I'm asking for help. Thanks...