I've seen other people suggest that the user account should be deleted and re-created with Administrator settings.
I'm not sure if this would be feasable in your situation.
New Dell computer on my office network. User (me) has admin privleges, but they will not apply. I can logon as the adminstrator and everythings works. When I logon as user (even thought I have admin privleges) I cannot load or update. I had this problem on my home network a year ago and somehow repaired it. Help.