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i have connected my laptop to the video projector. all things are fine and there is not any problem for connecting laptop to video projector. but after opening up a presentation and pressing f5 to play it or playing a video clip and double click for full screen and in some cases suddenly, after some minutes (about 2 min) projector while is showing video clip or presentation, suddenly displaying the video/presentation stops and just shows desktop wallpaper. note: laptop keep running video/presentation property after that problem happening but projector fails to showing display. shows this: enter image description here

i use of win+p and select duplicate but it seems this option be changes to extend while opening programs.

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  • What presentation software are you using?
    – CharlieRB
    Commented Feb 20, 2017 at 12:57
  • @CharlieRB power point 2016
    – sajad
    Commented Feb 20, 2017 at 13:23
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    You have not given any detail on the laptop, but my guess is it is probably recognizing the projector as a projector, not a monitor. That may be why it changes. Another big factor is slideshow settings in PowerPoint. What is the setting under multiple monitors?
    – CharlieRB
    Commented Feb 20, 2017 at 13:37
  • @CharlieRB i did not configured power point settings. can you tell me more? what about playing video clips? i use of media player classic. i have middle range laptop with 1 gb graphic 2 gb ram and a weak cpu unit. i just use that for presentations and playing movies. its name is gateway.
    – sajad
    Commented Feb 20, 2017 at 14:06
  • This isn't a teaching site. There are lots of resources on the Internet to learn how to use PowerPoint. Here is one that may help you get started - How to Set Up a Slideshow in PowerPoint 2016.
    – CharlieRB
    Commented Feb 20, 2017 at 14:10

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