I have my dell laptop connected to my Vizio TV through VGA and when i play a movie or any type of video through my computer it wont show up on the tv screen, it just shows its black. But if u look at the laptop it shows it is playing. I downloaded something awhile back, i think it was some kind of movie player, and all of a sudden it started working but then i whiped my computer and i havent been able to get it back. I dont know what to do, anyone know how to get this to work?