Thanks for coming to help!
I have a powercolor r9 270x which has 1 dvi-i, 1 dvi-i,d, 1hdmi, and 1 display port
I am trying to hook up 3 monitors to this card and from my research its more than possible.. so I have.
Video Card outs:
Monitor 1: HDMI port to HDMI Monitor
Monitor 2: DVI-I port to DVI-I which is adapted to VGA.
Monitor 3: Display port out to DVI-I Adapter
so.. I can get two monitors to work.. any which way.. I can unplug monitor 1.. and now monitor 3 kicks on.. i plug back in monitor 1.. monitor 3 turns off.. I unplug monitor 2.. now monitor 1 and 3 are on.. and so on..
What is it that is going on here thats stopping 3 from displaying at once? windows 'recognizes it' but wont let me assign it anything, wont 'identify' it.. bt it detects it... Everything is fresh on this PC so I dont expect any driver issues honestly..
Had this issue too ,after buying a new 3rd Monitor.
Always when plugged in the new one, the Second one went black.
But in Display Options IT was selectable , where it only had a Low resolution:.
You can select this "small" one and can choose to expand the Desktop with it.
After this Method all worked fine for me.