I recently installed a TV Tuner (Leadtek TVXP Deluxe), about a month ago, but I'm not sure how long this DVD problem has been going on (about that long). If I put a DVD in there, it no longer automatically opens a program I use called PowerDVD. If I open up PowerDVD and click play, I get an error (An internal error has occurred. Error Code: 890100F) and can't play the DVD. Also, I get an error in realplayer and windows media player. I tried trouble shooting with WMP help, it told me about how 2 interlacing video feeds don't mix well (TV tuner + DVD), but DVDs still wont play if I turn off the TV tuner software. How can this problem be remedied? Thanks