When a DVD won’t play, it can be the fault of the player or the disc. Initial troubleshooting can be done easiest with two DVDs and two players to isolate the problem. However, sometimes (especially when dealing with an older machine) the player simply cannot read a disc that a newer machine can. This can be due to wear on the disc or because the disc wasn’t as well mastered when it was manufactured. In that instance, all you can do is acquire a new disc.
