Hey John,  I too experienced the same issue shortly after installing the MasterLiquid 120 lite CPU Cooler.  Have you tried checking your motherboard fan settings in the BIOS?  I found that the MSI motherboard that I'm using defaults the CPU and pump headers to use the PWM mode (with 4 pin plug).  From what I found in other forums, the pump on these coolers (with 3 pin plug) need a steady supply of power so you want to set the pump header to use the DC mode.  After updating the pump header s
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