have an NZXT H630 I bought yesterday from ncix. The rear fan does not spin. The front one spins and the white light lights up ok. How do i fix the rear fan spinning ? I tried plugging it into other positions on the fan control board at the side but it has no effect. Is there a speed control or something I can change to get it spinning ? Tried contacting NZXT support but they seem to be unresponsive.