Hello s60088g,
Please note that when using HD 4000 it is must to have two DP outputs or monitors and then either WiDi, VGA, DVI, HDMI or embedded display to have the 3 display configuration.
At this point, this chart can be confusing with the information it shows so I am going to send this to the corresponding department so they can modify it as soon as possible.
This is the reason why you are having problems setting this configuration with the hardware you have.
Kevin M