ok, my macbook has recently developed a very annoying problem. i realize this has probably been covered a dozen times but i cant seem to find a sure fire answer to my specific problem. when i boot up my macbook, no matter what situation it runs in the lower 70*C and fan at 6200 rpm. this is with no program running at all, literally all closed. i even logged out and let it sit at the user choice menu and the fan continues to blow hard and bottom remains hot. if someone could give me a little insight it would be appreciated and if u need specifics i'll post whatever is needed.