I have Windows 10 installed in a dual boot configuration with my original Windows 7 installation. I have had enough fun with Windows 10 and want to return to my solo Windows 7 setup. I see two possibilities. There is a recovery option in the Windows 10 "Update and Recovery" section that promises to restore the pre-installation factory condition of the computer. The second possibility is for me to simply restore the single system MBR I saved before installing Windows 10, then clearing the Windows 10 partition. I am confident that will work, but I'd like to try the Microsoft way. My fear is that the recovery program will clear out both systems, not just Win 10, and/or trash the boot info. Does anybody have any experience with the Windows 10 recovery option?