Downgrade From Windows 10 after Changing Administrator Password
Solution 1:
I'm not 100% sure if this'll work, but I think it is failing because it still finds the profile on your computer.
The following steps are for windows 8 (can't test it on 10 right now, but I bet they're nearly the same)
- Right click start button
- Select Control Panel
- Open System
- Choose Advanced System Settings
- Under tab
Advanced, FrameUser Profiles, press Settings... - Select the user and hit Delete