Hi keithinphilly,
The display you have that is not showing - have you tried connecting it just by itself to see if it works? If not, consider replacing the cables you are trying to connect with. Make sure it is a straight-through connection as well, no adapters/adapter cables, no KVM's, no AV/R's.
Also, if you are still having the issue after the above steps, provide me with your Intel® Graphics Driver Report and I'll take a look! Steps for getting that report are here; Graphics — Intel� Graphics Driver Report
Thanks,
-Nic