1.  I verified the system still booted off my old moblin image.

2.  Then I replaced the motherboard with the one provided by Intel

3.  I rebooted on the old moblin image (several times), and everything
    worked as it had before.

    before.jpg is a photo of the screen taken at this point.

4.  The system was left running over the weekend idle, no problems.
    This morning (Jan 14) I turned on the monitor and everything was
    fine.

5.  I pulled out the USB stick and reimaged it with a new image from
    Mithrandir, plugged it back in, and restarted the menlow box.

6.  The system no longer gets past BIOS, ending at code 0060 (what
    does this mean?)  I cannot enter BIOS by holding DEL key; maybe
    the system is no longer recognizing USB?

    broken-after.jpg is what I generally see at this point.

    On some boots, it doesn't even get this far, just shows code
    0000 and no display.  On other boots, it will fail to display
    anything to the screen (monitor goes to "no signal mode") but
    appears to boot up to the point it has the 0060 code.  About
    one out of three or four boot attempts display BIOS screen;
    occasionally (but not always) there is a graphical line in
    the lower right of the screen.

    The 0000 boots I've always seen, even with the old mboard.
    The other behaviors are new as far as I recall.

    I don't think the issue came from the new image; I think that
    somehow there is a hardware fault.  However I don't know how
    to trace it.

7.  I restored the USB stick to the previous image (I think) but 
    still am getting the same error 0600.  I've tried booting with
    no USB devices attached after leaving the system powered off for
    several minutes - same thing.

8.  I've tried reseating the boards and replugging in many of the
    wires, but no go.  I didn't mess with jumpers; none were loose 
    and I believe all are set to match the original board.