I built a "new" pc with some older generation hardware but I can't get anything to show up on the monitor. Its a Z87 asus sabertooth board with an intel 4770K chip. It has a gtx 770 gpu. Also 16gb of ram. So when I had everything connected, the PSU came to life, the cpu comes to life, the fans on the video card come to life, and even all of the POST lights on the motherboard show everything is ok, but nothing shows up on the monitor. I even tried a displayport cable plugged into the mobo, but same thing happens, which is no display. Am I doing something wrong? Or do I just have a bad motherboard? Thanks.