HP EliteBook 840 G6 and Ultraslim Docking Station not displaying on two monitors when laptop display

[BFLF]

I have an Elitebook 840 G6 that I dock to a HP Ultraslim Docking Station.  I have been using an external VGA monitor and display port monitor.  I am able to see that the laptop detects all 3 monitors, the two external and the primary laptop monitor but only one of the external monitors with display if I have the laptop display lid open,  If I close the laptop display closed both external monitors will display.  If I dock my older HP Elitebook 820 G3 it display on the laptop display and the 2 external monitors what driver do I need to update on my G6 to be able to use all 3 monitors?

My laptop is configured as follows:

Windows 10 Enterprise OS Build 17134.1365

AMD Radeon 550X Driver Version  26.20.11002.1001

Intel UHD Graphics 620 Version 26.20.100.7324

HP Ultraslim Docking Station.  firmware for the 2013 Ultraslim dock is version 2.33

Thanks!

[BFLF · Accepted solution]

I was able to solve the issue. My laptop had been setup with a company image and it had the generic Windows program for setting up the monitors. I downloaded Intel Graphics Command Center and it was showing that when my two external monitors were connect along with my laptop monitor, one external monitor though on and connected was disabled. The Graphics Command Center allowed me to select the monitor and enable it.  Everything is now working as expected!