I've built the pc I've connected everything. But when I boot the pc no signal is sent to my monitor. The monitor works on other things so I know its normal problem with that, the fans spin on the cooler and my 120mm fans, I dont know if I'm missing something, or if I'm screwed... the cables I have connected are: the audio header, usb 3.0, sata, all the jfp1 headers in the right place, the cpu, the fans. My rams installed. Is there something else I need to plug in?