I need your help! I've bought HP ProBook 6470b laptop with i5-3210M CPU @2.50GHz and integrated Intel HD Graphics 4000, 4 GB RAM.
Running Windows 7 Enterprise 64bit SP1 Build 7601 with Intel graphics driver version: 188.8.131.5261
Can't connect 3rd display (using two HP LA2306x) neither with 2xHDMI, 2xVGA, or 1xHDMI and 1xVGA.
At the time I can use only two of them: One HP with laptops display or both HPs when laptop lid is closed.
When all the monitors are connected I can see them (below), but if I choose to etend second display, click Apply and Keek Changes - nothing hapens, same window appears (bellow).
Question: How the 3rd monitor should be connected? (it's written in intel.com what HP Graphics 4000 supports up to 3 displays)
Forgot to mention, I'm using HP 2012 230W docking station.
Could you please verify that your system has the latest System BIOS update from HP available here?
My system has the latest BIOS (came with it from factory).
You need to have external 2 displays to be connected via native Display Port.
You will be able to turn on all three than.