New build and when we turn it on the system powers up and all the fans and lights are running. The monitor doesn't register any output and nothing shows up on the monitor. It is kinda like it isn't detecting the tower is connected. Also, every 30 seconds or so the power seems to glitch and there is a quick loss of power with a quick beep and then everything runs like before. I have checked the monitor on another system and it works fine. I'm at a loss as to what is going on but am feeling like it is something with the graphics card?? Any help would be appreciated.