If you are installing Windows 10 on a PC running Windows XP or Windows Vista, or if you need to create installation media to install Windows 10 on a different PC, see Using the tool to create installation media (USB flash drive, DVD, or ISO file) to install Windows 10 on a different PC section below.
You need to reinstall Windows 10 on a PC you’ve already successfully activated Windows 10.You have a license to install Windows 10 and are upgrading this PC from Windows 7 or Windows 8.1.