I'm an idiot i forgot a few days ago after i took my comp apart to clean it dust remover and so on. That i upon hooking it back up i plugged the video cable in to the second dvi port and not the first as it was when i first replaced my video card upgrading from the ati 4650. in short problem fixed lol guess one the ports on my video card is bad or mac just don't like it. well thanks to every one that read the post or posted on it to give me idea's.