If you want to speed up your boot process of Windows 7, so you must
configure the system for the automatic connection system. This feature
is especially designed for computers that are used by one person, then
it would not even be a privacy or security. Enabling this feature is
quite simple, you just have to write special netplwiz control order. You
will see the User Account. Select the user account window, and uncheck
"Users must enter a user name and password to use this computer". Then
click the Apply button, it will open the login window automatically.
Enter the password and confirm it. That's it.