problem with playback of DVD
i have bought a new DVD writer sony DRU-810A
the problem the DVD playback is not clear in media player,powerDVD doesn't play the movie i can only hear sounds,
while the DVD from NFS most wanted black edition playsback with good clarity.the other DVD's i tried are matrix,spiderman,kill bill.
what is the problem ,power DVD doesn't play the video i can only hear sound?