I'd like to perform a manual revert to Windows 7.
An elderly client accidentally upgraded what I believe was Windows 7 Home to Windows 10. This was within the last week, and Windows.OLD is still there, but “Go back to Windows 7” is not an option.
(Yes, he was the only user, and he was an admin. For some reason, Windows 10 says it's the Pro edition now. I don't know why. I don't understand why “Go back to Windows 7” isn't present. Client doesn't know what he did, nor what options he selected along the way. Yes, a clean reinstall could be done, but returning to the old setup saves about four hours of other reinstalls and setups.)
Microsoft has a KB971760 "How to restore a Windows 7-based computer to a previous Windows installation by using the Windows.old folder".
I'd like to confirm that this same process would work from Windows 10 to Windows 7.
If anyone has a pointer to a similar Windows 10 to Windows 7 guide, I'd appreciate it.
Another answer might be a way to install the “Go back to Windows 7” functionality. What's under that hood?