It's looking more and more like a GMP cpu problem.
@juve4v and @liifer what kind of CPUs do you have in those rigs that crash immediately?
EDIT: @LongAndShort i see now you have the exact same problem. And you said this rig has an i7 3820 right?
I have i5-2400 @ 3.10 GHz. This rig crashes.
I updated driver to 14.4 same error.