why do i have to activate norton utilities every time i restart my PC??

every freaking time i start my pc up nortonutilities tells me i only have like 5 days left. i have activated it successfully i dont know how many times. what the hell do i have to do to get it to work. ihave norton internet security on my pc as well and THAT does not have any issues. i have tried the removal tool and reinstall yet it STILL doesnt stick. what gives??