I have followed this answer, but I don't see option
Go Back to Windows 8.1, just the
Reset this PC and
Advanced start-up. What am I missing? Why is this option gone?
Is it because over 30 days has passed since installing Windows 10 Home?
Few days ago I've entered a different product key (legal, activated) and thus changed my Windows 10 Home into Windows 10 Pro. Can this be the source of my problem?
If that's the case, is there any rollback solution or do I have a clean install as the only option?