9 solutions for forgetting Windows XP login password (1)

If you are a very easy to forget person during the use of Windows XP, then don't forget to create a copy of Windows at the same time you set the password. The startup password for the account password in XP, which allows you to avoid the hassle of formatting the hard disk.

Find the "User Account" item from the "Control Panel", select your own account to enter the control interface as shown in the figure, we can see that there is a "block a forgotten password" in the task list on the left. ", click to open the "Forgot Password Wizard", the wizard will prompt to insert a formatted blank disk, the operation will let you enter the password used by the account, you can quickly create a password reset plate.

Later, when we have forgotten the account password, log in to Windows XP without using the "Welcome Screen" login method, press "Ctrl + Alt + Del" and "Windows" In the "Security" window, click the "Change Password" button in the options 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. The password reset wizard, through the password reset disk just created, you can use this password to reset the password and start the system. Reset your password and log in to Windows XP.

The creation of "password reset disk" is dangerous because anyone can use this "password reset disk" to log in to Windows XP, and they can enter the user in the name of the user. Account, operate everything that real users can do, so you must keep the "password reset disk" in the appropriate place to prevent loss or loss of confidentiality.

Method 1 - Use "administrator" (this method applies to administrators whose username is not "administrator")

We know that during the installation of Windows XP, the first is "administrator" "Default login, then will ask to create a new account, use this new account to log in when entering Windows XP, and only the created user account will appear in the Windows XP login interface, there will be no "administrator", but the actual The "administrator" account still exists and the password is empty.

After 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. When you type "administrator" in the username, the password is blank, and then the password of "zhangbp" can be modified.

Method 2 - Delete the SAM file (note that this method is only applicable to WIN2000)

Security management for user accounts in Windows NT/2000/XP uses the Security Account Manager (Security) Account Manager, SAM) mechanism, the security account manager manages the account through the security identity, the security identity is created at the same time when the account is created, once the account is deleted, the security identity 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, there is no password.

However, such a simple method is not applicable in XP, Microsoft may have made restrictions as a BUG... So now under XP system, even if you delete the SAM, you can't delete the password, instead Will cause the system to start initialization error, and thus enter the infinite loop and can not enter the system!!

Method 3 - Find the password from the SAM file (provided... will use the DOS basic command)

Before the system starts, insert the boot disk and go to: C:WINNTSystem3Config Use the COPY command to copy the SAM file to the 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 it in the file. Username; 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.