Tip 1: Remove the SAM file to recover the password
we all know,
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If you install two operating systems, you can use another operating system can access NTFS to start the computer. If you do not install two operating systems, you can use other tools to access NTFS, and then delete the C: Windowssystem32config directory of the SAM file, restart the operating system, then the administrator password for the Administrator account no. Of course, remove the hard drive for up to another machine to delete SAM file is a good way.
Tip: Windows NT/2000/XP user accounts in the security management and use of the security account manager (Security AccountManager, SAM) of the mechanism, the security account manager on the account management is conducted through a secure identity, security , identity when creating the account created at the same time, once the account is deleted, the security identity also be deleted. Security identity is unique, even if the same user name each time to obtain the security identity is created is completely different. Therefore , once an account is deleted, its security ID no longer exists, that is, re-use the same user account name will also be given a different security identity, does not retain the original permissions.
Security Account Manager
specific performance is% SystemRoot% system32configsam file. SAM file is a Windows NT/2000/XP user accounts database, all the user's login name and password,
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Tip 2: Use a tool to recover passwords
use Off1ine NT Password & & Registry Editor. With the tool software to make a Linux boot disk,
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Tip 3: Use NTFS DOS to restore the password
This can be used NTFS DOS write NTFS partitions from DOS, tools, tools with which to make a DOS boot disk, and then to the C: WindowsSystem32 logon.scr under the screen saver will be renamed, then copied command.com to the C: Windowssystem32 the next, and the file is renamed logon.scr. So wait 5 minutes after starting the machine, this should appear in the screen saver now becomes a command line mode, and has Administrator privileges, it can be modified by adding a new administrator password or account of. Do not forget to change after the screen saver's name changed back.