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Cannot extend desktop onto second monitor all of the sudden

I have a Dell XPS 8300 on Windows 7 with a NVIDIA GeForce GT 545 graphic card. I also have two Dell St2420L monitors. This computer is almost always on and of course when not in use an screen saver ...
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Is it possible to use 2 laptop screens as a one in windows 8 on ultra book of dell

I want to use only one laptop and only the screen of the other laptop to extend the desktop. Is it possible to merge or extend screen? I am a professional sound producer so its convenient to have ...
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394 views

How to get Windows 8.1 laptop to retain extended desktop settings when switching monitor output to other machines via KVM?

I have a notebook running Windows 8.1 and its VGA port attached to a KVM switch for sharing an external LG 1920x1080 monitor with other machines. I can extend the Windows 8.1 notebook desktop to this ...
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Multi-Monitor video playback with controls one screen and video on another

I am looking for a free piece of software that will allow me to play a video/DVD on two monitors. I don't want to span the video. Ideally I would like to have the full-screen video play on my second ...
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Windows 8.1 extended desktop background after login

I have updated Win 8 to 8.1. I have set desktop background to show in metro UI (start screen). I have extended desktop and on the second monitor after login I have only blue screen After going to ...
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2nd Monitor Removed but Desktop Remains

I have the same problem as this question: I think my computer has two desktops and I don't know how to remove the extra one However when I try the solution proposed I don't seem to have 2 ...
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382 views

Can't copy laptop display to hdtv only extended second monitor

I'm trying to hook up my laptop to my HDTV to be able to get films from my laptop and watch them on a secondary TV screen (i.e. duplicate the laptop screen to the TV). At first I drove myself crazy ...
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Windows XP extended or clone desktop not working anymore

I had this issue few days ago for this given configuration: Dell laptop connected to an external VGA monitor. Before: I used it for 2 months in extended desktop without problems, often ...