Sounds like you somehow have blocked user accounts. Check user accounts settings. Why are you running NOT AS ADMIN.. is this your machine, if so , you should be set up as administrator.If it is your machine only, remove the user account so it logs on as admin. You may have to reset permissions. That can be difficult for the average user, and no, I am not calling you average, its just that you are asking for help, so I figure this may be difficult for you is all. Could help better with more info and an os.