i just got my Radeon 5670 from ups today. i placed it into my pc and now the monitor wont display anything. if i take out the monitor it works perfectly but its only when i place the card into the motherboard the monitor goes blank. i tired changing the ram around but still nothing. everything boots well though. the monitor im using is old. it has a VGA cable. i plug the cable into my motherboard. not the graphic card because it only supports Hdmi and dvi. what could be the problem?