WinXP System
Method One:
Right-click "My Computer"--admin--Local Users and groups--users--in the right side of the border to find your username--right click, choose "Set Password"--no need to fill out, directly confirm can cancel the power-on password!
Method Two:
Program--Control Panel--Find the user you want to cancel the password--Choose to change the password--Enter your current password, the new password is empty, directly determine the password can be canceled!!
Method Three: Click Start/Run, enter "Rundll32 Netplwiz.dll,usersrundll (or control Userpasswords2)", and deselect the "to use this computer, the user must enter a username and password" option, In the next pop-up dialog box, enter the account name and password you want the computer to log in automatically each time (the password seems to be empty).
Method Four: Control Panel-user account-Change the way users log on or off, tick before the "Use Welcome screen" option, and then click "Apply Options".
Win7 Direct Login:
1 in the Start menu of the "Run" command to enter "control Userpasswords2", you can open the Login Management window;
2) First select the username to automatically log in, and then remove the "to use this machine, users must enter user name and password" before the "check";
3 Click on the application, in the window appears to enter the user password to confirm it!