Enable Auto-Logon in Windows Vista
Since due to higher security risks Windows Vista not allows auto logon by default.Don’t do this trick if your system contains confidential data and is physically insecure.Here there is a trick to auto logon Windows vista.
1.click on the Start menu button and type ‘netplwiz’ on the search bar on the Start menu and hit Enter.(if you want to do this trick in Windows XP, click Start, Run, and type control userpasswords2 in the Open box)
2.In the GUI window that comes up, you will find “Users must enter a username and password to use this computer” box and uncheck it.
3.After this click ‘Apply’
4.In the new dialog box that opens type the name of the user account you want to auto-logon by default (if the account is not normally passworded then leaves it blank)
5.Click OK and exit