I'm afraid I can't offer any advice on the problem, but have also hit the same problem with very similar system specs. When I install without any graphics drivers I have a working system, but get bits of graphical corruption around the mouse pointer and can't change resolution/dual output. If I install with just my chipset and graphics drivers it boots through the startup process, but then I lose input on my monitors when it seems to reach the desktop.

Also: a bit creepy that you're having the same problem as me, at the same time, with similar specs and a similar username! I found another post of yours earlier that was about another problem we had in common, the ACPIPCI error on startup.