Hi humphreyhorse,
Thanks for the video.
Have you tried changing the Video controller option in BIOS, when you have disconnected the video card from the system?
Does the system have dual Video cards (On-board and discrete)?
If so, disconnect the discrete video card from the system, and connect the Video cable to the onboard video card.
Refer the topic” PCI Express Cards” to remove the discrete Video card: http://bit.ly/14NhzEz
Restart the system and keep tapping F2 key to enter BIOS. If the system enters the BIOS, select Video option using the Arrow keys and expand Video and change it to “Onboard”. Press “Esc” key and Save and exit the BIOS.
Check the display and post the results.