2 of my monitors cant be connected at the same time

Hardware Hub
1

So basically last night I disconnected my LG monitor so a friend could use it and now it doesnt show up in display settings but its visible in nvidia control panel (though greyed out / black). I tried multiple cables bu the weirdest thing is when I disconnect my acer monitor the lg monitor connects and for some reason they cant both be used at the same time? I've been using them together for about a year before now.

2

Are you using 3 monitors or only 2?

Its strange because I used the use 3 dell monitors on my 970 and on each port their model number was listed.

Maybe something to do with that dual-dvi listed there

3

The dual-dvi is my xstar DP2710. Dont know why its named like that but it has always said that and has worked fine with that name on multiple operating systems..