XP operating system login password forgotten or cracked

Windows XP user security audit is very strict, if you forget the password (password) set, because there is no login password, can not enter the system; the initial method total I chose to reinstall Windows XP, but this method is cumbersome and time-consuming. The following describes how to crack the Windows XP login password without any other software:

Cracking the login password requires two Prerequisites:
1. The partition for installing Windows XP must use the FAT32 file system;
2. There is no Chinese character in the user name.

After confirming that these two conditions are met, you can perform the following steps to crack the login password.

1. Start Win XP, when running to the “Starting Windows XP” prompt interface, press “F8” to call up the system startup selection menu and select “with command line security mode”;
2. When the operation stops, it will list the "Administrator" and other users' selection menus (other users in this example take xpuser01 as an example), select "Administrator" and press Enter to enter the command line mode;
3. Type the command "net user xpuser01 1234/ADD". This is the command to change the user password. "1234" in the command is the changed new password. If the typed user does not exist (xpuser01), the system will automatically add the user.
4. In addition, you can use the "net localgroup administrator xpuser01 /ADD" command to upgrade the user xpuser01 to superuser, you can have all the permissions.
5. The last step is to restart the computer, in the login window. Enter the new password you just changed to successfully log in.

For the NTFS system

Start the computer with the Windows 2000 CD and select Repair Windows 2000 in the installation selection interface (press R) ), and then choose to use the faulty console repair (press C), the system will scan the existing window 2000/XP version, after a while, it lists the login options, choose one, press Enter. See you? You don't need to enter the administrator password to log in directly to write to the Recovery Console mode (starting with the Windows XP installation CD is required to enter the password)
into the Recovery Console, of course, you can perform any system level operations. Including: copy, move, delete files, start, stop services, even format, repartition and other destructive operations.
This crack is not only passed under XP, but also in XP+SP1, even XP+SP3 English version By
Note: Some installation windows of Windows 2000 have the option to display the faulty console login, and some are not.

If the password of the administrator in your machine is forgotten, you can't enter the system.
You can do this (assuming your system is XP):
Boot F8, with command line security mode
with the command: copy c:\\windows\ epair\\sam c:\\windows\\system32 \\config
This will be fine
Restore to the initial state, the password is empty!

Tested, the above method is for the xp system with only one administrator user aministrator, and the password is set for the super user, but forgot The password does not work, because you can't enter the system without entering a password in any state. Only use a third-party boot disk to clear the password or another operating system of the machine to complete the above operations.