If that doesn't work, it's time to call tech support. Odds are you have a bad card. If Windows recognizes the card but you are having problems getting the drivers installed, you may have an IRQ conflict. This means that two different devices in your system are trying to use the same interrupt. You will have to resolve this IRQ conflict before you can go any further.
Some computers have the video cards, modems or sound cards integrated onto the motherboard.
These systems often have unique problems and conflicts with DTV boards. If you have an integrated motherboard, you may have to call your computer dealer or manufacturer for tech support. Make sure that every item listed is working properly. You do this by hitting the properties button for each and every device on your system. If any devices have a yellow circle with an explanation point in it, you must re-install it immediately.