sound problems on tv tuner

hello
my tv tuner card is finally working properly (about 4 months after buying it), but now the sound is a bit low. by a bit low i mean very low. i have tried messing with windows audio properties but to no avail. do i have to manualy add the tv card into the audio properties or is it the software that i am using?

It's probably the software. You may well find that it has its own volume control buried in it somewhere, mine does anyway (Hauppauge).