Bypassing the Logon Screen

1) At a command prompt, type netplwiz to open Advanced User Accounts.
2)On the Users tab, clear the Users Must Enter A User Name And Password To Use This Computer check box and then click OK. Note that the Users Must Enter A User Name And Password To Use This Computer check box doesn't appear if your computer is a member of a domain. Only computers that aren't part of a network or are part of a workgroup can bypass the logon screen. Domain users must enter a user name and password, even to log on locally.

The Automatically Log On dialog box appears.
3)Type the user name and password for the account that you want to be logged on each time you start your computer.