CPU Overheating Issue

[GuntherFors]

Out of no where my CPU temperature skyrocketed and I started hearing buzzing noise. For whatever reason my case fans started going on and off at the same time. I have the Corsair H100i v2. Tried cleaning the fans and the radiator as well as reapply thermal paste with no use. The case has great airflow and has been functioning properly for 8 months now without issues. I don't think the pump is dead because one of the tubes is warm. Why did this happen all of the sudden? Plz help

 

[Blas]

It looks like a dead pump, one of the tubes might be warmer because some natural convection pushes the hot water through that tube, but it looks like the pump died. If the radiator is at ambient temp, then you can bet the pump is the culprit. In that case, try to RMA it if under guarantee, else replace it...

 

[nubbsauce]

Out of no where my CPU temperature skyrocketed and I started hearing buzzing noise. For whatever reason my case fans started going on and off at the same time. I have the Corsair H100i v2. Tried cleaning the fans and the radiator as well as reapply thermal paste with no use. The case has great airflow and has been functioning properly for 8 months now without issues. I don't think the pump is dead because one of the tubes is warm. Why did this happen all of the sudden? Plz help

How is your pump connected to your Motherboard (Which headers is what plugged into)?