user account

[Hy]

I recently open my control panel, and goes to Users
Account. I was looking through it, change the way the it
login but I press Cancel.

Now I just turn my computer back on, it asked for
password. Which I usually don't put, it always automatic
log in, but now I have to type password. I try my
administrator passwords, it didn't work.

Any one know how to set it back to automatic login with
administrator account?