Dear PCR,
I tried the Hardware and Devices troubleshooter and it did not report anything.
I looked up and followed the steps for the 'clean boot' (disable all non-Microsoft services and disable all startup items in Task Manager). This had no effect. I still have the same symptoms, that is, I can read audio CDs fine but Windows refuses to mount a DVD.
What could be causing this behavior in Windows???
Thank you,
Mike