3rd Monitor won't detect

[Darth_]

I've got 3 monitors, DVI-DVI, DVI-DVI, HDMI-DVI. When all three are connected, only First and Last are running. When HDMI input is disconnected, First and Second are running.

This is Windows Settings with HDMI unplugged.

This is Windows Settings with HDMI plugged in.

Warning! The numbers of the monitors as provided by Windows Settings differ between setups.

On the first screenshot:
- No. 1 is the Last display
- No. 2 is the First display
- No. 3 is the Second display

On the second screenshot:
- No. 2 is the Last display
- No. 3 is the First Display
- Either No. 1 or No. 4 is the Second display

When HDMI is unplugged No. 1 is not recieving any video input, although Windows Settings does not show that it is disconnected.

The First display is Samsung SyncMaster 2253 BW
The Second display is LG 24GM77
The Last display is Philips 222E

The GPU is R9 280x
The Graphics Card is Sapphire R9 280 Double-X
Windows has detected the display adapter as Radeon R9 200 Series

The Operating System is Windows Server 2016

 

[Ramlethal]

You need a program to run additional monitors from 2 to 6. Try display fusion...

 

[Darth_]

You need a program to run additional monitors from 2 to 6. Try display fusion...

I tried your solution, the program automatically disconnects one of the monitors upon connecting the third one
It will not work for eyefinity, i need to run the third monitor from onboard gpu