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Hello Everyone, I am from Australia and just today setup my first ever custom watercooling loop. I used the Corsair XD3 pump/reservoir combo and it is making a loud grinding noise from the time I switched it on. Initially I thought that it is air bubbles and after bleeding the noise will subside. I bled the loop for close to 3 hours but the noise still persisted. I bit the bullet and started my PC. Using Commander Pro if I set the pump speed to 50% or less then the pump is quiet. If I raise it any more than 50% then the grinding noise comes back on. Also, if I rotate and hold my PC at a 60 degree angle the grinding noise reduces. At this point I have no idea what is wrong. I am suspecting its the pump itself and I may have to RMA it. Can anyone advice on the issue? You can hear the sound generated by the pump here: https://imgur.com/jydbyQq Kind Regards, Rajiv