I am unable to play original or burned copy of dvd's using power dvd 5. I am using the same program on another PC with the same player which is a Liteon xj-hd1665. This is a new player, this player also worked in another computer. I am using windows Xp professional and I have 256 of ram but this is a intel pentium 3 processor with 801 mhz, could be that be the problem or is there another program that I can use to fix this. Thanks Steve G.