|How old is the Computer or the DVD that is in the Computer?|
Some of the older DVD's were either DVD- or DVD+ and could only
read the DVD Disc related to the type it was ( example if you had a
DVD- and tried to view a DVD+ it would give you the message you are receiving)
If it is a Multi-Read DVD, meaning that is can view both DVD- and DVD+ then
you either have a bad DVD Disc you are trying to view or are the DVD lazers are bad on the DVD section of the DVD. Or you are not using a Software program that
will view DVD's or are missing the codec that can view the DVD you are trying to View.
Hardwicks Computing Helps