Quickly restore the forgotten administrator password of Windows 2000/XP

1. Delete the Sam file and clear the Administrator account and password.

The Windows 2000 winnt \ system32 \ config directory contains a SAM file (account and password database file), which saves all user names and passwords in Windows 2000. When you log on to the system, the system will proofread the user name and password you typed with the encrypted data in the SAM file. If the two are completely consistent, the system will be smoothly accessed, otherwise, you will not be able to log on, so we can use the method of deleting the Sam file to restore the administrator password.

After deleting the Sam file, restart the system. At this time, the administrator account has no password. In this case, you can log on to the system using the Administrator account without entering any password, after entering the system, you can reset your administrator account password.

2. Find the password from the Sam File

The required tool is LC4. Run LC4 to open and create a new task. Then, click "Import> import from Sam file" to open the Sam file to be cracked, in this case, LC4 automatically analyzes the file and displays the username in the file. Then, click "session> begin audit" to crack the password. If the password is not complex, the result will be obtained in a short time.

However, if the password is complex, it will take a long time. In this case, we need to use the following method.

3. Reset the disk with the password

After logging on to Windows XP without using the "Welcome screen" Logon method, press "CTRL + ALT + DEL" to display the "Windows Security" window, click "Change Password" in the options to display the Change Password window. In this window, back up the current user's password, click the "backup" button in the lower left corner, activate the "forgot password wizard", and follow the prompts to create a password reset disk.

If you enter an incorrect password in the Windows XP Logon window, the "Logon Failed" window will pop up. If you cannot remember what your password is, you can click the reset button to start the password reset wizard, reset the disk with the password you just created, reset the password, and log on to Windows XP.

4. Use the software to change the password

Windows key 5.0 and Windows XP/2000/NT key can be used to automatically change the administrator password to 12345. After the system is restarted, log on with this account, in the "control panel" user, modify the administrator password again.

Software name: Windows key 5.0

Usage: after running, three files are generated: txtsetup. OEM, winkey. sys, and winkey. INF. Copy them to a floppy disk and create a Windows key disk. Then, use the Windows XP installation CD to start the computer. Press F6 to enable the system to install a third-party driver.Program. In this case, the Windows key floppy disk will automatically jump to the windowskey interface, then it will forcibly change the administrator password to "12345 ".

Software name: Windows XP/2000/NT key

Usage: use it to create a drive floppy disk. Then, use the installation disc to start the computer and press "S" to insert the drive floppy disk, the system administrator password is changed to 12345.