I am currently in the process of rebuilding two computers after doing a teardown and refurbishment, on both systems so far I am getting no video output no matter which output I try, (HDMI, VGA, DVI Display port) one motherboard being a asus f2abs-m and the other also being a Asus board, both boards are still out of the case, I have all the necessary hardware installed, (Sata drive, RAM, CPU, etc) I am now at the stage where I am trying to boot the computer and I am not getting any video output, no matter which output I try, the monitor acts like it's gonna connect for a about 5 seconds and then nothing, I am having the same problem with both boards, I am fairly proficient at building systems and I am sure it's something really simple that I am over looking, any help would be appreciated