that I got mine to do exactly what you want.
Mine had always done it the way you want and then one day came up with the logon screen. Did what I posted to you and got back to booting up with nothing to click.
Maybe it has to do with the intial install. Did you create a user account, in addition to the default administrator account?? MS doesn't make it clear that one should.
I don't understand all of the intricasies, but before asking others to help, boot up in safe mode and see if you have another Administrator account. The "hidden" Administrator account if it exists will only show in safe mode.
Just something to find out before you ask the question again, because I really don't know why yours is not working just like mine.
I also have a check in the fast user switching box, however, I have no idea whether that affects it. I have no other user, than the hidden administrator and guest showing in safe mode.