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This article mainly introduces "how to restore XP system administrator password", in daily operation, I believe many people have doubts on how to restore XP system administrator password, Xiaobian consulted all kinds of information, sorted out simple and easy to use operation methods, hope to answer "how to restore XP system administrator password" doubts helpful! Next, please follow the small series to learn together!

Tip 1: Delete SAM files to recover passwords

As you know, Windows XP passwords are stored in SAM files under WindowsSystem32Config where the system is located, and SAM files are account password database files. When we log in to the system, the system will automatically calibrate with SAM in Config. When the password and username match the encrypted data in SAM file, you can log in smoothly; if there is an error, you cannot log in. In this case, we can recover the password by deleting the SAM file.

The security account manager is represented by the %SystemRoot%system32configsam file. SAM file is Windows NT/2000/XP user account database, all users login name and password and other related information will be saved in this file.

Tip 2: Use utility software to recover passwords

Use Off1ine NT Password&Registry Editor. Make a Linux boot disk with this tool software. This boot disk can access NTFS file system, so it can support Windows 2000/XP well. Using Ntpasswd, a tool on the floppy that runs on Linux, you can fix the problem and read the registry and rewrite the account password. The method used is very simple, just step by step according to the prompts after its launch. Here, we recommend that you use Express mode, which lists users and lets you choose which user's password to change. By default, users in the Admin group will automatically find users who change the name of Administrator, which is very convenient.

Tip 3: Use NTFS DOS to recover passwords

Use NTFS DOS, a tool that can write NTFS partitions from DOS. Make a DOS boot disk with this tool software, and then rename the screen saver logon.scr under C:Windowssystem32, copy command.com to C:Windowssystem32, and rename the file logon.scr. After waiting 5 minutes for the machine to start, the screen saver that should appear now has command line mode and Administrator privileges, which allows you to change passwords or add new administrator accounts. Don't forget to change the name of the screensaver back when you're done.

Tip: In Windows NT/2000/XP, the security management of user accounts uses the mechanism of Security Account Manager (SAM), which manages accounts through security identifiers, which are created at the same time when accounts are created. Once accounts are deleted, security identifiers are deleted at the same time. The security identity is unique, and windows xp gets a completely different security identity each time it's created, even if it's the same username. Therefore, once an account is deleted, its security identifier no longer exists, that is, the account is rebuilt using the same username, and different security identifiers will be given, and the original permissions will not be retained.

At this point, about "how to restore XP system administrator password" learning is over, I hope to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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