Program is running, but can’t see the window on the Desktop

If you have a program that appears in the Task Bar but not on any of your screens

Function + F4

Choose PC Screen only Option

or

You can press the Windows logo key  + P and select Choose PC Screen only option, 

or use the following steps if you need more settings options.

• Display settings to open the Display page. Your PC should automatically detect your monitors and show your desktop. If you don't see the monitors, select Detect.
• Scroll down to Multiple displays, then select an option from the drop-down list to PC Screen only
  
• Select Keep changes.