I finally solved my problem.
I don't know if this will help others, but I'm posting it, just in case.
Here is a rundown of what led to a solution:

Prior to this I had searched the internet many...

I'm having this problem also and I've tried everything I could find on the net without success.
The following is what information I've found on my computer:

∙ Both drives (Plextor DVDR...