my pc just recently started having an odd clicking noise come from the radiator, not sure what it is or why it’s happening but i guess that’s why i’m here. i’m 100% sure the fans aren’t making the noise and i’ve tracked down the source of the noise to the radiator. if anyone could help me figure out what’s wrong with it it would be greatly appreciated!
Lemme guess: You've got one of those MAG Coreliquids that have adopted the Pump-In-Radiator design(the pump is behind the metal square on the radiator).
But you have it top mounted, and since AIOs aren't topped off with fluid, and do lose some volume slowly over time, the pump has become exposed to more air.
The pump should be kept immersed in the fluid. You probably hear clicking now because fluid isn't flowing through there as well as it once did.
If it isn't that, then the impeller might have some debris stuck in it or something.