I recently overclocked my 1090t to 3.6 ghz, and decided to go with an aftermarket heatsink just to be safe. I chose the coolermaster hyper 212 based on reviews, and so far have been very happy with it. However, ever since I installed it i've gotten an error message saying cpu fan error, press f1 to continue. I know the heatsink is working as my temps under load never seem to go past 50c, and also because I can see the fan physically spinning. It's a much larger fan than the original heatsink, so i'm thinking it might be clocked lower and that may be the problem. I don't have any cooling problems, but i'd like know what can be done to fix this mild annoyance. Thank you.