My computer says that I have 3 monitors connected but I only have 2 connected.

Windows 8 is saying that I have 3 monitors connected but I only connected 2. If recognizes a 3rd monitor that is really small and I don't know why. I have my 2nd monitor setup to be an extention of the 1st one and if I move my mouse all the way to the end
of the 2nd monitor my mouse is able to move off screen. I'm assuming this is because the computer detects the 3rd monitor to be there but like I said I only own 2 monitors and have only 2 connected. This is very annoying because sometimes things get placed
on the 3rd monitor and I can't move them to the other monitors because I can't see how to move it because I only connected 2 monitors and for some reason windows detects another even though there is nothing there. I just recently installed a new graphics card
and before it I didn't have one and my VGA and DVI cables connected to the ports that came on the mother board. When I had it setup like that it was fine but ever since I installed the graphics card it detects 3 monitors when I only want to use 2.

Hi,
Did this issue occur before?
Try to remove all unnecessary hardware, and use Win+P to change screen input option.
If the issue persists, try to create another administrator account and login for test.
Karen Hu
TechNet Community Support

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My computer says that I have 3 monitors connected but I only have 2 connected.

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