Restore Win2000/XP administrator password

First, delete the SAM file, clear the Administrator account password

Windows 2000 where the Winnt\\System32\\Config directory has a SAM file (ie account password database file), it saves all Windows 2000 user name and password. When you log in, the system will check the username and password you typed with the encrypted data in the SAM file. If the two match, it will enter the system smoothly, otherwise you will not be able to log in, so we can use delete SAM. File method to recover administrator password.

After restarting the SAM file, restart it. At this time, the administrator administrator account has no password. At this time, you can log in to the system with the Administrator account. You do not need to enter any password. After entering the system, reset your administrator account. The password can be.

Second, find the password from the SAM file

The tool needed here is LC4, run LC4, open and create a new task, then click "IMPORT→Import from SAM file" to open The SAM file to be cracked, LC4 will automatically analyze the file and display the user name in the file; then click “Session→Begin Audit” to start cracking the password. If the password is not very complicated, the result will be obtained in a short time.

However, if the password is more complicated, it will take a long time, then we need to use the following method.

Third, use the password to reset the new password

After logging in to Windows XP without using the "Welcome Screen" login method, press "Ctrl + Alt + Del" combination Key, the “Windows Security” window appears, click the “Change Password” button in the option, and the Change Password window appears. In this window, backup 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 the wrong password in the Windows XP login window, the "Login Failure" window will pop up. If you really can't remember what your password is, you can click the "Reset" button to start. Password reset wizard, reset the password through the password reset disk just created, log in to Windows XP.

Fourth, use the software to change the password

Windows Key 5.0 and Windows XP/2000/NT Key these two software can automatically change the Administrator password to 12345, restart the system and use this account to log in, Then in the "Control Panel" user, then re-edit the administrator password.

Software Name: Windows Key 5.0

How to use: After running, it will generate 3 files: txtsetup.oem, winkey.sys and winkey.inf, copy them to a floppy disk, Make a Windows Key disk. Then use the Windows XP installation CD to start the computer. Press F6 during the boot process to let the system install the third-party driver. At this point, put the Windows Key floppy disk will automatically jump to the WindowsKey interface, then it will force the Administrator password to "12345".

Software Name: Windows XP/2000/NT Key

How to use: Make a driver floppy disk with it; then start the computer with the installation CD, press "S" during startup, insert the Drive the floppy disk, the password of the system administrator account administrator will be changed to 12345.