CORRUPT PROFILE? This is the primary reason you always have a spare admin account. So there it is, the terrible reason you never want to remove all but one account.
As to auto login. Go get TWEAKUI (see google.com) and set your machine to login...
I am wanting to delete all user accounts, which i did... not problem there. What i am trying to do is make it where I am the main user, i want to turn my computer on and it go directly to the main screen. I don't want to have to click on my profile. I hope i am making sense. Any help would be greatly appreciated.