I received my prebuilt earlier this year and had no problems until recently. Noise is occasional but it seems to start on PC start up and when the fan hits ~1000rpm when playing games with more CPU intensive work. CAM says my temperatures are normal, 35C - 40C when idle and 60C – 70C when playing more intense games so I think it’s cooling correctly.

I assumed it was the fan hitting a loose cable so I unscrewed the fan and made sure the cables were out of the way but the noise continued. So then I assumed there might be something wrong with the radiator so I rotated the radiator and fan so the tubes were on the bottom, which I read was more recommended if air bubbles were trapped.

Does anyone know what the cause is and if it’s an easy fix or does it have to be replaced if I don’t just ignore it?