Windows 10: Cannot enable/detect 3rd monitor in Windows 10

I need help from the community. I've got a three monitor setup that is no longer working as expected. Monitor #3 is no longer showing up in "Customize your display"

My setup is as follows

Nvidia GTX 570 : Monitor #1, Monitor #2
Onboard Intel 4600: Monitor #3
OS: Windows 10 build 10532.

I was playing with mame and it wouldn't start on my main display. So I went into Settings->System->Display and disabled monitor #1 & #3. After playing games I went back to this window to re-enable the monitors and only #1 & #2 show up. #3 is not listed. Clicking "Detect" only shows a dialog saying no additional displays could be found. All the hardware is listed in device manager, just not in the settings->system->display section.

What I've tried

I've deleted monitor #3 and the Intel Graphics adapter in Device Manager and re-scanned for hardware changes.
I've pressed Win+P and made sure that the display is set to Extend.
Re-installed the latest Intel & Nvidia drivers.
Jumped up and down like a frog in a sock.

Any ideas would be appreciated.

:)

 

Cannot detect 3rd monitor after upgrading to windows 10 . It was available in window 8.1 . Technically cannot add more than 2 monitors in windows 10 . HELP

Hi,

Thank you for posting your query in Microsoft Community.

We understand how you feel about the situation. We're sorry for the trouble this has caused.

Before we proceed, I need more information to help you better.

1. Do you receive any error message while trying to connect the third monitor?

2. What is the make and model of the graphics card installed on your PC?

You might be facing this issue due to the incompatibility of the driver software with Windows 10 . So I suggest you to install the driver in compatibility mode by downloading the driver software from the manufacturer website and
check if it helps.

Now, to install in Compatibility Mode, follow these steps:

a. Locate the executable file (.exe file) for the driver installation program.

b. Right-click the file, and then click Properties.

c. In the Package Name Properties dialog box, click the Compatibility tab.

d. Click to select the Run this program in compatibility mode for check box, click Windows 8 with which it is compatible with in the Run this program in compatibility mode for list, and then click OK.

e. Double-click the executable file to start the installation program.

Hope the above information helps. Reply with necessary information and the result to help you further. Thank you.

 

Cannot detect 3rd monitor after upgrading to windows 10 . It was available in window 8.1 . Technically cannot add more than 2 monitors in windows 10 . HELP

i upgraded my laptop to windows 10 initially when i was using windows 8.1 i was able to easily get extended display for 3 monitors i.e one my laptop monitor and 2 other monitors . But when i upgraded to windows 10 i can use only 2 monitors & the 3rd one
is not getting detected .If some one is saying it is driver issue i do not think so because how can the previous version of windows 8.1 successfully run 3 monitors ? Also i thought that upgrading to windows 10 will make my life easy as i will be able to add
more monitors instead it has made my life harder now i have to work from only 2 monitors besides don't know where the exact problem lies because even if i decide to shift to higher configuration PC's but the problem is not in the systems but in windows 10
it will be terrible waste of money .

 

Solved. This similar thread provided the solution.
How to enable a disable monitor? - Windows 10 Forums