I've the corsair H60 aio cooler for sometime now and it has worked great, but i'm starting to have some problems. My CPU is running at 37C-39C(at idle), it used to be in the teens. I have checked the 3 pin connector that my pump is connected to and it seems to power my fans fine. The fan on my radiator is working well too. Ive also tried to feel if water is flowing through the tubing but i havent been able to tell since the tubing is kind of thick.