Okay so I have 30 video bingo machines. Every single one of them have a Asus_P5GC-MX_1333 motherboard in them, Went to install a new one on a machine that had video and sound and everything working fine. had a broken connection. So the only thing that was changed was the motherboard. After I did that, there is no video going to the screen. I put the old one back in to get it back up, that one would not show any video too, even though 5 mins before that it was, i tried taking working video cards, and ram sticks from other machines to see if they were the problems, still nothing, then i found turning the power supply off and taking the battery out of the mother board will cause the no video output on any of the motherboards I have. Completely lost on this one. Tried resetting the cmos with the jumpers as well. Still nothing. No beeps, no video at all. I have tried the onboard vga output as well as the video cards. Also tried diffrent power supplies