First question to you is, does it play in other dvd? If the answer is no. Then the problem is that you need to get a software that plays dvd. Because even though the computer has a DVD burner and player, you still need a software to play DVDs. My friends computer has a dvd player, but Windows media player won't play it. After I install Nero Showtime it worked. Try that, it doesn't have to be Nero Showtime, but some kind of software that plays dvds.