If you forget the password of your machine or you cannot access the system after the password is changed, you need to crack the logon password. The method for cracking the Windows XP Logon password is as follows:
There are two necessary prerequisites for cracking the logon password:
1. The partition for installing Windows XP must use the FAT32 file system;
2. the user name does not contain Chinese characters.
After confirming that the two conditions are met, you can perform the following steps to crack the logon password.
1. start Windows XP at startup. When you go to the prompt page "Windows XP is being started", Press "F8" to bring up the system startup selection menu and select "safe mode with command line ";
2. after the operation is stopped, the "Administrator" and other user selection menus are listed (in this example, other users use xpuser01 as an example). Select "Administrator" and press enter to enter the command line mode;
3. run the "Net user xpuser01 1234/Add" command to change the password of the user. The "1234" command indicates the new password after the change. If the user you typed does not exist (xpuser01 ), the system automatically adds this user.
4. In addition, you can use the "net 1oca1group administrator xpuser01/Add" command to escalate xpuser01 to a Super User and have all permissions.
5. In the last step, restart the computer and enter the new password you just changed in the logon window to log on to the computer.
Another method is as follows:
The windows \ system32 \ config directory of Windows XP contains a SAM file (account and password database file), which saves all user names and passwords in Windows XP. 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.