Question / Help monitor black screen

have a ultrabook Dell Vostro 5740 i7 2.6GHz 2.0ghz , 8gb ddr3 1600 with 160gb ssd , Nvidian gt740M 128mpx 2gb ddr3 ,

when trying to capture monitor does not show my desktop or the screens that I am opening , there is a specific configuration to show the notebook display ?
remember that are 2 video drivers, an Intel graphics, and other Nvidian ...
the monitor driver and
Generic PnP Monitor
in the video drive propiedades speaks Integrated Display

I'm brazilian..
 
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