How To Make User Automatically Logon To Windows 7

If you need to set some user login automatically to the computer or just want to save some time, open advanced user accounts settings by pressing start menu and typing netplwiz

Select the user you want to automatically login in the Users tab, then uncheck the box next to Users must enter a user name and password to use this computer.

Click on the Apply button at the bottom of the User. 

Leave password blank and press OK.

Now this account automatically logs in on the next reboot.

Image from google. Not mine.