Greetings, Since installing my Seidon 120M 86.2 CFM Liquid CPU Cooler, I have been hearing pump noise that sounds just like an old hard disk drive loading. According to Cool Master, the pump is suppose to run silently. Also, my friends tell me that their pumps do not make any noise. I have Fractal mid sized tower, an Asus Z170-A ATX LGA1151 Motherboard and an Intel Core i7-6700K 4.0GHz Quad-Core Processor. When I unplug the pump's power cable from the motherboard, the pump turns off and the noise goes away, so I am certain that the pump is causing the noise. My motherboard has the pump power pin clearly label so I am certain that the pump's power cable is properly connected to the correct motherboard location. Is this a faulty pump or a common problem?