Are you forgot windows password then you can helpful this article.
Required Material- Windows 7/8/10 CD.
Boot PC to bios mode
Select First Bootable Device : DVD Drive
Insert windows OS DVD to Optical drive, Then boot to CD
While loading select Repair option from OS menu.
Press Alt+F10 button to open command prompt
Give following commands
>C:/
>Cd windows>system32
C:\windows>system32>Copy utiman.exe utilman1.exe
C:\windows>system32>copy cmd.exe cmd1.exe
C:\windows>system32>del utilman.exe
C:\windows>system32>rename cmd1.exe utilman.exe
C:\windows>system32>Exit
Close the command prompt
Restart the PC. After reaching login window – Don’t enter any password
Ease of Access option can see on the bottom left side
Click Ease of Access option
Command Prompt will open automatically.
C:\windows>system32>control userpasswords2
After enter above command new window will open – User Accounts
There you can reset the password.
Thanks
Sukhesh