I upgraded Windows 7 Home Premium to Windows 10 Home. It worked for a couple of days and suddenly there is no Start Menu (Click start and nothing happens) and no Search box (Icon present but nothing happens when clicked). MY machine is slower accessing all menus (Control panel, etc.). I'd prefer not to refresh or reinstall as I have a number of apps installed a little time to fool with it. I've seen many threads on similar issues and wonder if this is a Microsoft issue or my issue. I'd appreciate some direction here.