This feature bypasses the Windows login screen and allows Windows to automatically logon to a specific user account at startup. Not only will it save time but don’t have to repeatedly enter a username and password to access the computer. If this is a share computer, setting the computer to automatically login on startup can pose serious security issues.
To begin we’ll need to access ADVANCED USER ACCOUNTS CONTROL PANEL. Open ‘START and type NETPLIWZ in the search box and then press OK

Un-check the box that says USERS MUST ENTER A USER NAME AND PASSWORD TO USE THIS COMPUTER and press APPLY.

The AUTOMATICALLY LOG ON window should now appear, from here set the account you wish to automatically login when the computer boots. If you notice in this example there are two users, John who is just a regular user and Adam who is an administrator. We urge you be extremely careful on your user selection because Windows 7 will automatically login to the person you specified next time the computer is ON! In this example we’ll configure the computer to login as John every time it starts up. Simply enter the user account and password. If the account does not have a password, leave the two lines blank and pres OK.

Enjoy..