Going back to Windows 7 or Windows 8.1 - Windows Help -
So people can go with your repeated nonsense, or what Microsoft says.Going back to Windows 7 or Windows 8.1
Applies to Windows 10
ēIf itís been less than a month since you upgraded to Windows 10, you can go back to your previous version of Windows by going to Settings > Update & security > Recovery and selecting either Go back to Windows 7 or Go back to Windows 8.1. This won't affect your personal files, but it will remove any apps you installed after the upgrade to Windows 10. Learn more.
ēIf itís been more than a month, this option wonít be available in Settings and youíll need to use a different recovery option.
Recovery options in Windows 10 - Windows Help
Recovery options in Windows 10
Problem: You want to reinstall your previous operating system.
See this section: Go back to your previous version of Windows.
Go back to your previous version of Windows:
If you have installation media and a product key for your previous version of Windows, you can use them to go back. Get the details in the Use installation media to reinstall Windows section of this topic.
Downloaded Windows 10 -1511 ISO from Tech Bench this morning set up .exe starts up fine when if I mount it so presumably the download is fine. I'm going to burn a DVD also to have a 1511 (10586.0) installer/ boot disk .