If you want to Automatically Login to Windows 8, see to the tutorial below.
When you boot your computer in Windows 8 Consumer preview , first it will ask password for your chosen user account. If your machine is not generally used
by any other person, or you don’t want to keep a password, then you have to use Automatic Log In. Asking password becomes irritating time to time.
In Automatic Log In, the computer know the user password before login and thus it will not ask you for entering it. You have to put your user account name and password once to set Automatic Log In, and from next time the machine will remember you and login automatically with the given user ID and password.
1. Press Windows button to open the "Start Menu”.
To get Automatically login into windows 8, type "netplwiz” without quotes in the start menu of Windows 8 Consumers preview
and hit ENTER.
2. It will open a User Accounts dialogue box.
3. Now select a User from the list.
Here I am having only one user administrator, so I select the account "Rick”.
After selecting the User, uncheck the box mentioning
"User must enter a username and password to use this computer” and click OK
4. This will open a "Automatically Sign In” dialogue box where you will be asked for your selected User Password.
Enter the password and click OK
Your computer is now automatically setup to login into Windows 8.
Next time when your system will start or reboot you can directly log into your system without asking for password.