So i bought a I7 4770K and a 212Evo by coolermaster. i am not overclocking but my cpu keeps shutting down, i'm maxing temps at 50C and i'm concerned. I have it so tight that the nuts under the board twist when i try to tighten the heat sink. But at the same time i don't feel like it is down all the way. I am still able to twist the heat sink just a little bit. Also my CPU keeps randomly shutting off every few hours with kernel 41 error. I don't know if the nuts underneath need to be tightened then the heat sink but maybe i'm just paranoid.