MA790X-DS4 mobo and Gigabyte GT-PTV-AF-RH tv tuner = crash? :(

Hi. I had an old computer on some Epox mobo and athlon xp with this TV
Card from gigabyte model GT-PTV-AF-RH and it was working very well. I
bought new computer and it is now mobo Gigabyte MA790X-DS4 + Amd X2 6000
+ 2Gb A-data 800Mhz memory + GF9600GT and of course this TV card
Gigabyte GT-PTV-AF-RH. And it dont work. It installs normally, i launch
included Power Cinema and starting to SCAN for channels and it goes all
off black *poof* and my computer restarts. Is it possible that this mobo
and this tv card have some conflict? I tried lastest drivers for mobo,
lastest bios, default mobo settings, just everything i could setup.
Maybe you know something what can help? Gigabyte support says they can't
help me. Looking for replies! Thanks.