I guess this is failing before you even get to the memtest and BIOS options.
The good news is that this will be something very basic and not associated with the OS. The bad news I have no idea what.
However, it does limit the options for the problem:-
1) Is it the same processor and/or memory (sorry - I have not checked to see if both mobo's take the same CPU).
2) Problems seating the memory / CPU.
3) Dodgy power connection to the Mobo.
4) Onboard or separate Graphics Card?
5) Maybe some others ???
6) Bad Mobo?
Hope this helps