Sorry if I am posting this in the wrong spot, but I need some help with this problem. Earlier today I bought a dvd and a dvd box set. Everything about them is almost identical other than a) the content and b) one has a dub set of options (they are both anime dvds). The thing is my computer is more than happy to play the solo dvd but I've tried two of my dvds from the set and my computer is refusing to play them. As I said they are almost identical both are region 1, both are NTSCs, both have are 1.33:1 full screen, both are dvd videos, and both are dolby digitals. I have never had this problem with my dvds before.\ Edit: I meant to say computer dvd player, been a long day. My laptop has a Windows 7 operating system just for clarification.