I bought a box set of DVDs several years ago. They have always worked great in my at least 3 DVD players, but fail to show ANY data when trying to view them on different computers. (XP/Win7)
The result is the same for several DVDs, work great on several stand alone players, but fail to "load" in a computer DVD drive. On my XP computer it just does nothing, on my win7 machine the dvd player grinds for a while then says unable to load application e: In each case, with every DVD in question there is simply no data.
To be clear, I have no problems loading any other DVDs on my computers. Just this set of DVDs.
I would like to back up these disks before they die. I assume I'm facing some sort of copy protection, but I do not know..
Any advice would helpful.