Smoovjazz,
I agree! your tv card more than likely came with a cd which contained the
driver associated with it. A driver is a set of tools or data that communicates
with your operating system, windows xp or windows vista, and translates
instructions back and forth in order to produce sound. If you still have the
disc which came with your computer, insert the disc into your cd or dvd player,
hold down the shift key on your keyboard for about 5 to 10 seconds so that it doesn't start, then right click on my computer, click properties, then look for hardware, device manager, in the middle of the screen, click this and see if you
have any exclamation marks next to sound, if so, right click on it, and click update
driver. Warning click the 3rd option, do not select use the internet, this will insure
it looks at the disc you inserted.