So I'm up and running...
Can't touch memory settings or system goes through the failsafe boot process 3 times and then reverts to a bootable bios config. So XMP is not working for my 4 x 4gb Mushkin Redline memory which has been working flawlessly on this mobo since inception via XMP until this new BIOS.
I think disabling Intel Smart Connect Technology is what finally made the system bootable again, not sure, and not willing to play around at the moment. The PC boots consistently now.
New BIOS version please!