I have Windows 10 64 bit version and today when I go to the PC the screen only shows wallpaper and taskbar icons (some). I tried to open the programs on the taskbar and they only show as opened on the taskbar and won't display on the desktop. Ctrl, alt del won't show the task manager on the desktop. The menu icon works, but won't open any programs on the desktop, it only displays them as being open on the taskbar. It started when I added 2nd screen I picked extend windows - then I changed it to duplicate windows then the trouble began. How do I fix this?

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