If you want to install or reinstall Windows 7, Windows 8.1, or Windows 10, you can go to the software download website, select the link that matches your version of Windows, and create your own installation media using either a USB flash drive or a DVD.
Back up your files before you install or reinstall Windows on your PC.
Before you go to the download website, here's what you need:
A PC with a reliable internet connection The 4 GB download time varies, depending on your internet connection.
A USB flash drive or DVD A blank USB flash drive or DVD with at least 5 GB of available drive space. Using a DVD requires a DVD burner and software on the PC you’re using to create the media, as well as a DVD player on the PC where you want to install Windows.
A product key Your 25-character product key.
You'll find further requirements and step by step instructions on the software download website. Select the link that matches your version of Windows. On that page, under Create Windows installation media, click the button for Download tool now.
For help with your product key, see Find your Windows product key.