3 monitor on onboard graphics (intel HD 4600 1536 MB)

[thols92]

Just now i install sierra 10.12.1 on this hackintosh :
ASrocK z97
intel i53,5GHz
24gb ram
I want to work whit 3 monitors , connected by 1xHDMI,1x DVI,1xVGA
but right now only one of those monitors was detected by system (DVI)
from a google search I realized that OsX has a different system to handle the graphics so it is possible that something dont work, but do not understand why disconnecting all monitors connected one by one and leaving them the only one at time
the only one functional is this one connected with the dvi cable
there is any pach or any method to make all work good?
if I buy a dedicated video card, such as a 1050 gtx I can make them work together?

 

[toleda]

3 monitors , connected by 1xHDMI,1x DVI,1xVGA

Native macOS/HD4600 supports 3 DP monitors; VGA is not supported, use an adapter.
Framebuffer edits are possible for HDMI and DVI.
MacOS does not support 10xx/Pascal/Nividia; 9xx/Maxwell/Nvidia requires web drivers and 4xx, 5xx, 6xx, and 7xx supported natively (with a few exceptions)