How to register Window 7 upgrade

You can upgrade from window xp or vista to window7. To upgrade• Start >Search files and folders (we have to type “regedit”) >Enter• In the “user account controls” window click on “yes” and registry editor will open.• Then navigate to the OOBE Folder and click the arrows next to the a registry key to open the registry folder HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Setup/OOBE/•