I would think your solution will solve the problem.... after all the windows 10 install is an update.... However if you do not want windows 10, I would strongly consider making sure you check to make sure your month to decide whether or not to revert is not up. After a month of Windows 10 being on your machine from what I am told you cannot revert back to windows 7 and your license is not any good. After that you have to use Windows 10. That is what I have been told.