This has gotta be one of the most commonly asked questions. Okay, I just finished putting together my very first PC and I'm having trouble. For some reason the thing wont turn on. I even upped the power supply but every time I press that start button no dice. I'm wondering if the case wiring is compatible I read the manual and insterted the pins the right way initially of course. The lights on the led turn on if I rig the wires differently. I'm just really lost at this point. Here are the specs. So far all the components are supported. Mainboard G31M3 series graphics card r4670 Power supply Antec 650 watt combined max out 160 w combined max out 540 w Dual core Pentium Processor E5200 2MB L2 shared cache Case Rosewill R891Sl I think. Any help would be great.