Silverstormz, Maybe I am misunderstanding you. If I am not mistaken, the Corsair pump is powered by a 4 pin molex connector from the PSU, it has a 3 pin connector to plug into the CPU fan header on the motherboard. The 3 pin fan connector is to keep your motherboard from not detecting a CPU fan and also to monitor the pump speed. Make sure the 4 pin power connector is plugged in to the PSU and that the fans on the radiator is running. If I misunderstand you, please advise. The pump has to run 100% all the time. Also, if your board has and 8 pin ATX connector, use the 8, not just 4.