How to restore lost window password

you have lost your windows password? cant login and dont want to install windows again? well then this tutorial is for you  all you need is a windows installation disc/usb boot your computer with it a select sheet will appear, select Repair Your Computer and then select command prompt now you will be in cmd type this command

copy c:\windows\system32\sethc.exe c:\

and then this

copy c:\windows\system32\cmd.exe c:\windows\system32\sethc.exe

what will it do? it will replace sticky keys executable file with cmd executable  now reboot your computer remove installation media and boot with hdd when login screen appear, press shift or ctrl 5 times command prompt will pop up now enter this command

net user yourusername *

and it will ask you to enter new password
enter new password exit cmd and login with your new password now
enjoy.