I just built a new computer with an ASRock z87 in an NZXT case. The motherboard has a 9pin front panel connector, but my case only has 8 pins, the 2LEDs for HD, 2 for Power, and the switch for the powerbutton and the reset button, each with two pins. My LED lights won't even light up and I'm not sure if the problem is that there is one unused ground pin.
I know the power supply works as the motherboard's ethernet light and the GPU light blinks once when I turn the supply on, but otherwise nothing.