How to cancel WinXP system login password

(1) Online transfer of the removal of the Sam file to XP, if you delete the SAM file can not enter the system!

(2) "New user under DOS: NET user UserA (username) 123456 (password)/add." Then use "net localgroup Administrators UserA (username)/add" command to promote UserA user to Administrator level, that is, have all permissions operating system "method I tried not to, because you do not have access to the user, do not have permission to use this command, the premise of this command is to be in the case of a user login!

Correct cancellation winxp system login password way, in two cases:

1. If a user with a password is not a password administrator (administrator), you can go directly to Safe mode, login with the password Administrator (Administrator), and delete the other user's password in the "user account" in Control Panel! That's OK!

2. If you are using a password administrator and have a password, replace the SAM file (the Sam file is the file that stores the user's data), and overwrite the c:windowsrepair Sam file with the C in DOS: Windwossystem32config, replace Sam, Sam doesn't have a password! (Command: COPY c:windowsrepairsam C:windowssystem32configsam)