Solutions for Windows XP system password loss

Reset disk with Password
You can reset the password disk to restore the user's account and personal computer settings when the user forgets the password. Password Reset disk is a password backup disk created when the user has not forgotten the login password. It can be created based on whether the computer is in the domain or not, here we will give a brief introduction to the example of a computer that has not logged on to the domain.
Password Reset Disk
Click "start"> "Control Panel"> "User Account" → click your account → "block a forgotten password" → follow the "forgot password wizard" step by step, until it is completed. If your computer does not have a soft drive, the system will prompt "insert a blank, formatted disk in drive C:". Click "Next ", follow the on-screen prompts to continue. At last, a kb file with the userkey name will be generated in the root directory of drive C. psw's key file, which is cut to a secure mobile storage medium for backup.
Reset disk with Password
When you log on to Windows XP and forget your password, resetting the disk will be useful. It is easy to use: insert the password reset disk into the drive, click the right arrow next to your account, and then click "Reset disk with password" in the prompt box ", follow the "password resetting wizard" prompts to reset the password. If your computer does not have a soft drive, the situation is a little more complicated. Start the computer in any way that can recognize your C drive and mobile storage medium, copy userkey. psw to the c drive root directory, and then reset the password following the above operation method. Although your password has been changed, resetting the disk with this password is always valid for this user name, so you do not have to recreate it.

Change Password with administrator privilege
If the password prompt does not help you remember the password, and you have not created a password to reset the disk, it is necessary to ask someone with a Computer Administrator Account to create a new password for you. For security reasons, when the password is forgotten and the Computer Administrator cannot recover the password, he can only create a new password for you. This method should be thought of by the user naturally. Unfortunately, in many cases, we only set one Computer Administrator account on one computer, and the password of this account is what we forget, which makes the problem complicated.
However, there are always more problems. We know that during Windows XP installation, the system first logs on to the system as "Administrator" by default, and then requires a new user to be created so that the new account can be used to log on to Windows XP, in the future login interface, the "Administrator" account with Computer Administrator qualification will not be seen again. However, the account actually exists and the password is blank. After understanding the above principles, we will discuss the following things in two cases.
Restore the password at the command prompt
1. restart the computer, press F8 after the startup screen appears, and select "safe mode with command line ".
2. On the logon page that appears, you will see "Administrator" and the usernames of other local users. Click "Administrator" to enter the command line mode.
3. Use the net command to force the password change for the user name that forgets the password.
4. restart the computer. In normal mode, you can use the "command" username and "netadmin" password to log on to the system.