The problem is, it does not start with original BIOS . Anything I flash on primary bios, it does not work. I wont flash secondary bios, because I've bricked one card (which I will try to recover using 8 + 1 method).

I've tried plugging the card directly into motherboard, I've taken out CMOS batter, so all settings were reset. I am really at loss here. Could somekind of power surge or something else physically damage any connections card has from primary bios?

This is getting ridicules =)