have you mounted your h100i backplate right. some boards need washers inbetween it b/c space, also make sure the little notches on h100i backplate are were they're supposed to be. There is an actual proper position of how the backplate fits, cant remember if the notches have to be on the top side or bottom side or right or left youtube it, make sure u clean paste too with iso alcohol and also make sure to clean it off the heatsink, and never lift the heatsink off when u placed it, little tiny wiggles up and down can screw your mounting up. if that doesn't work try making the fans pull air out you're case.