Launched on my Windows 8 test system just fine, i7-860, 12GB RAM, GeForce 560Ti, release nVidia drivers, Stardock version.
One thing is to maybe try rolling back the beta drivers. I know the AMD drivers have some known bugs (not with Elemental just in general) and who knows maybe the nVidia ones do to. I'd give the release drivers a shot and see what happens.