I have started PowerPoint on the desk computer but the application is not visible on screen. What should I do?

Select Quad presentation mode on the operation panel.
Use the DisplayControl to select the quadrant in which PowerPoint is running.
You may continue in this quadrant or close PowerPoint, use the DisplayControl to select quadrant1 and restart PowerPoint again.
Select full screen on the operation panel and choose the proper signal.

Go to Four Quadrant System page