hardware is as follows
three dell e2014 touch screen monitors
#1 mini display port to hdmi port #1 cable
#2 mini display port to hdmi port #2 cable
#3 hdmi port to hdmi port #2 cable
one nuc g87790-402 board that has the two mini DP and one HDMI cable port on the board.
I can get any two monitors to work at once, but NEVER all three.
when I go under windows 7 display settings and try to apply extend desktop to monitor #3 I get the error message that I can't save display settings.
when I look at device manager I notice something wierd
it lists the following
dell e2014t hdmi #1
dell e2014t hdmi #2
dell e2014t hdmi #2
It appears that the driver can't differentiate between the two monitors becuase they are using the same input port?
fortunately this monitor also has a vga and full size display port jack on back.
I'm going to buy a display port cable and see if that solves the situation,
but I wanted to ask here first and see if anyone has successfully done 3 monitors?
there are only two threads on this and both have failed it appears.