I got BOTH laptops up and running over the weekend. The issue was painfully simple, yet completely overlooked by myself for hours while I messed around.
The AV Wizard was defaulting to the EXTERNAL VGA connector, (which had no monitor connected) rather than the internal display. This makes no sense to me, but it IS what was happening.
Connecting a monitor to the VGA plug showed the AV wizard on both laptops, and selecting "VGA-2" as my default connector pushed it back to the internal display.
Another note is that the default refresh rate appears to be 50Hz, which is incompatible with both the internal displays on both laptops (possibly the reason why the external VGA was activated?) Even my external monitor (a cheap 15" analog LCD) displayed the AV-Wizard but had a warning on the screen "Input signal out of range, please correct". Once I changed the refresh (I went to 75Hz) everything was happy, and the internal display was selectable on VGA-2.
So hopefully this silly issue helps someone, maybe just because it's now documented in the forums.