Here are some solutions:
Safe Mode Access:
Restart your computer and repeatedly press the
F8 key during startup to enter Safe Mode. Once in Safe Mode, you can access the
Administrator account (which often has no password by default) and reset or remove the existing password
1113. This method is particularly effective if you’re using a physical keyboard to navigate the system.
Ctrl+Alt+Delete Trick:
At the login screen, press
Ctrl+Alt+Delete twice. This may prompt you to enter the administrator username and password. If the password is blank or you’re using the built-in Administrator account, this could grant access
110.
Built-in Administrator Account:
If you’re using Windows XP Home Edition, the
Administrator account is typically hidden. Boot into Safe Mode (F8) and try logging in as
Administrator without a password. If this fails, you may need to use third-party tools. In Safe Mode, you can also try "net user Administrator new_password" in CMD
If this fails, you can use Ophcrack, KonBoot, Lazesoft Recover My Password or Hirens BootCD