is there a for sure way to know if my ATI tv tuner card is defective, or there is another problem? is there some way to check it? the device manager does not recognize it either. i think i have tried everything suggested as far as driver updates and stuff, but my computer won't recognize the tuner. hate to just go buy another TV tuner card when this one was hardly used. i had it built into my Dell XPS rith VISTA 32bit when i bought the computer.