In the Search bar type: netplwiz and press Enter.
Just uncheck Users must enter a username and password to use this computer
Probably you will be prompted to write your password. Enter it or leave it blank.
tham khảo: http://www.sevenforums.com/tutorials...y-startup.html http://www.webtlk.com/2008/10/28/how...reen-in-vista/