The human brain is no worse than the computer, and often forgets some things. Many friends complain that they forget the system login password set at that time. If you set up a password at the same time, you can create a password for recovering the account in Windows XP. Boot disk, it can save you the trouble of formatting the hard disk, then if you have not done this, what should you do?
In the future, when we forget the account password, it is not used. Screen ” Login mode to Windows XP, press “ Ctrl + Alt + Del & rdquo; key combination, "Windows security" window, click the option "Change password" button, the password changes window. In this window, backup the current user's password, click the “Backup” button in the lower left corner, activate “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, click the "Reset" button. Start the password reset wizard, use the password reset disk you just created, you can use this password to reset the password and start the system. Re-setting the password and logging in to Windows XP.
“The password reset disk” is created with certain dangers, because anyone can use this "password reset disk" to log in to Windows XP You can enter the user account in the name of the user, and operate everything that the real user can operate, so you must keep the “password reset disk” in the appropriate place to prevent loss or loss of confidentiality.
Method 1 & mdash; & mdash; use “administrator” (This method applies to the administrator user name is not "administrator" situation)
We know that in the process of installing Windows XP, the first is to "administrator" rd default Log in, and then ask to create a new account to log in with Windows XP when entering this new account, and only the created user account will appear in the Windows XP login interface, and will not appear “administrator”, but actually The quo;administrator” account still exists and the password is empty.
When we understand this, if you forget the login password, on the login screen, hold down the Ctrl+Alt key and then press the Del key twice to display the classic login screen. Type " administrator” in the name, enter the password blank, and then modify the password of "zhangbp".
Method 2—— Delete SAM file (note that this method is only applicable to WIN2000)
Windows NT/2000/XP uses security account manager (SAM) for security management of user accounts. The security account manager manages the account by using the security identifier. The security ID is created at the same time when the account is created. Once the account is deleted, the security ID is also deleted. The security identity is unique, and even with the same username, the security identity obtained each time it is created is completely different. Therefore, once an account is rebuilt by a username, it will be given a different security ID and will not retain the original permissions. The specific performance of the security account manager is the %SystemRoot%system32configsam file. The SAM file is the user account database of Windows NT/2000/XP. All users' login names and passwords are saved in this file.
Knowing this, our solution has also been created: delete the SAM file, start the system, it will rebuild a clean and innocent SAM, which naturally has no password.
However, such a simple method is not applicable in XP, Microsoft may use this as a BUG, and made restrictions … … so now under XP system, even if you delete the SAM, you can not delete the password, but instead Make the system startup initialization error, and enter the infinite loop and can not enter the system!!
Method 3—— Find the password from the SAM file (premise …… will use DOS basic commands)
Before system startup Insert the boot disk and go to: C:WINNTSystem3Config Use the COPY command to copy the SAM file to a floppy disk. Get another machine to read. The tool needed here is LC4, run LC4, open and create a new task, and then click “IMPORT→Import from SAM file” to open the SAM file to be cracked. At this time, LC4 will automatically analyze this file and display the file. Username in the middle; then click “Session→Begin Audit”, you can 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.
[In fact, you can borrow another computer to use "Notepad" to write a.bat and scripts.ini, and then use floppy disk to copy to your computer through DOS] Description:
The above script uses It is a FAT32 file system. If you use the NTFS file system, you can do this by attaching the hard disk from disk mode to other computers that recognize NTFS file systems (such as Windows 2000 or Windows XP). This method can restore the password of the administrator (Administrator). Password recovery for local computer users and domain users in Windows 2000 systems is also valid.
OFFICE NT PASSWORD REGISTRY EDITOR. This software can be used to make LINUX boot disk. This boot disk can access NTFS file system, so it can support Windows 2000/XP well. Use one of the floppy disks to run under LINUX. NTPASSWD can solve the problem and can read the registry and rewrite the account. The method of use is very simple, just follow the prompts after startup to do it step by step. Here, it is recommended that you use the quick mode, which will list the user for you to choose to modify that user password. By default, the ADMIN group user is selected, and the user who has changed the name of the ADMINISTRATOR is automatically found, which is very convenient.