Distiguish tween the administrator account that you own and the hidden admin account that you have no real access to, cept for when you go into safe mode. They are two different accounts.

Someone got local admin rights remotely on my pc thru the hidden admin account that MS creates. That admin accont overrides the admin account that we all use. He had the control of the most powerful account on my OS, which happened to be hidden from me. Needless to say, I was at his mercy and eventually ended up being completely locked out of even simple user accounts.