How can I forget the password of the XP system?

Method 1: Use the command to change the password.
Before using this method, you first need to know one thing. in Windows XP, there is a default administrator user named "Administrator". By default, its password is blank.
Therefore, you only need to use the administrator user to enter the system (on the logon interface, press CTRL + ALT, and then press del twice to display the classic logon screen, enter "Administrator" in the user name and enter the password blank ),
Then enter the command prompt (enter "cmd" in "running"), enter "Net user mrliu 12345", and press enter (assume that your user name is "mrliu ", the new password you want to change is "12345"). The purpose of this command is to change the password of the mrliu user to "12345", regardless of whether mrliu has a password. Of course, you can also Article As mentioned in, restart the computer, press F8, select "safe mode with command line", enter "Net user mrliu 12345", and press Enter. The effect is the same. (Note that it is not "Net user mrliu 12345/Add". The original Article is incorrect. You do not need to add "/Add". It is the command for creating a user. It will prompt that an error message is returned: "user name already exists ")

However, what if you forget to reset the password for your Adminstrator user? You cannot access the Adminstrator user at all. After you restart the system, press F8 and you cannot access "security with command line ". Many people have noticed this. The method of the altar master also fails. So, is there any other way?

In fact, I believe many experts know that in window2000, you only need to delete the Sam file in the config folder and restart the system. However, in windowxp, the system cannot be accessed, and the prompt is "initialization ***** failed". I believe many people have learned it from others and cannot even access the system, if you do not have a backup system, you may need to reinstall it.

Is there really no way? Yes !!! You can still Delete the Sam file, but copy it back to a SAM file. The specific method is as follows:
Enter the pure DoS (if you do not know how to enter the pure dos, it means that you are really a dish, you can search for XP online to enter the pure dos method, there are many ways, you can use the boot disk, you can use software and Windows 98 or Windows ME)
Enter "del c: \ windows \ systems32 \ config \ SAM" after entering pure DoS (assume that your system is installed on disk C, you can find the Sam file in the directory of the system installed on another disk. Its function is to delete the Sam file, because the Sam file records the user's password. Of course, you can also enter the c: \ windows \ systems32 \ config folder at the first level and run the "del Sam" command to delete the folder)
After deleting the Sam file, enter "Copy c: \ windows \ repair \ SAM c: \ windows \ system32 \ config ". this command is used to copy the Sam file under the C: \ WINDOWS \ repair directory to the C: \ windows \ system32 \ config directory, this is because there is a backup Sam file under the repair file.
Then, restart the computer and see the lovely desktop. :)

The second method is to use the XP installation CD to fix the installation.
Start the disk on the bios and insert the XP disc. After entering the installation interface, there is an option "repair installation" in it. Press the r key to start fixing and installing Windows XP. Follow the on-screen prompts to complete setup (installation.
Then, you can enter the system without a password.