Cannot detect TV Tuner

Microsoft Windows

I recently installed a sapphire x1650 pro graphics card on my computer and
everything works fine but it now Windows media center does not detect my tv
tuner (which was working fine before the installation). I'm running vista and
intel core 2 duo
The sapphire x1650 pro card is not a tv tuner.

If you had a tv tuner, it is something else. If tv worked before in Media
Center, then you likely don't have the correct drivers installed. If tv
worked in another program other than Media Center, that does not mean that
it will work in Media Center.

We'll need more information as to what tv tuner hardware you have.
If the cards are in adjacent slots separate them as far apart as possible.
Can you play a DVD using Media Center?