To get a Windows 10 ISO for an upgrade from Windows 7, use Microsoft’s installation media page and the Media Creation Tool:
- Go to the Download Windows 10 site.
- Under Create Windows 10 Installation Media, select Download Now.
- Run MediaCreationTool.exe.
- Use the tool to create installation media or download the ISO.
If the target PC has no operating system, boot from the installation media and enter the Windows 10 product key when prompted. If the device originally shipped with Windows 10, Setup might use a license stored in firmware and may not ask for a product key.
Before installing or reinstalling Windows, back up files first.
If upgrading from Windows 7 and the normal update path fails, another supported method is to download and run the Media Creation Tool, or upgrade using an ISO or USB media.