

Others might have to use powershell command as explained here.

Additionally, Windows 8 users can also punch in the following command in CMD (win key + R) to find the product key- wmic path softwarelicensingservice get OA3xOriginalProductKey. Check out this guide from Microsoft to help you use the appropriate product as and when required. In the initial steps, the installer prompts you for the product key. Just check if your system meets the minimum system requirements for running a copy of Windows 10.

Prerequisites for the download include an Internet connection (duh) along with adequate free data space (at least 4GB) on either a computer, USB, or any other external media you choose to download. There are both 32-bit and 64-bit versions of Windows 10 ISO files available for download. There are many possible reasons for one to download Windows 10 ISO files, primarily being the need to clean install Windows 10 on your PC.
