reset passwod #win

In the Command Prompt window, type copy c:\windows\system32\sethc.exe c:\ and press Enter.
Type copy /y c:\windows\system32\cmd.exe c:\windows\system32\sethc.exe and press Enter.
Exit the Command Prompt and reboot the computer. At the login screen, tap Shift five times. The Command Prompt will pop up.
Type net user username password, replacing username with your username and password with a new password.
Exit the Command Prompt, and log in using your new password.