do you have a monitor hooked up also? are you using s-video or composite
I had/have the same card(using composite) and a tv acts just like a regular monitor when it's the only thing hooked up, i.e. it shows the bios screens, loading windows, using a boot floppy, setup from cd in 98,2000,xp. I seem to recall that it was a bit flaky when i had a monitor and tv at the same time, but that was a while ago so I dont recall