I have a Core i7 3770k on Asus P8Z77-V LK and three monitors (actually one of them is TV). Two monitors were connected via DVI and VGA, I tried to connect third monitor (TV) via HDMI but it didn't work.
It worked as expected when I was using any 2 of them, but I still need 3 simultaneously.
I don't think that this is a hardware problem because everything works on Linux (3 monitors simultaneously).
I have updated all drivers, windows, BIOS but the problem isn't solved yet.
Pls help).
Best Answer
The gfx card will only support 3 displays in Windows 7 if -
source
As for Linux vs Windows, check out this discussion. Notable is active vs passive adapters..