I just upgraded my Win 7 Pro desktop to Windows 10 Professional (32-bit). Minor problems, as usual, when a new system is installed, but a specific one is getting me crazy. When I click on any desktop icon, I do NOT get the traditional context menu, but the whole screen turns to a uniform background (theme color) and then, after half a second, go back to the usual desktop layout. This is really annoying. For example, I cannot empty the trash. Any idea?