Appreciate your effort sincerely, Dark Mantis.
Yes to all your questions. And I am using the DVI-D output. But I also tried out the mini-HDMI output - with the same results. In every case, the computer boots in and goes past the BIOS. My keyboard is fully responding. It is just that the display does not come up.
And with the same rig, the display comes up when I use my old ATI Radeon card.