Hello, I have DFI LP UT P35 T2R and I have recently bought 4x2Gb set of Corsair Dominators 1066Mhz and reinstalled win7. My problem is that my MB can only run 2 of those sticks at once so Im limited to 4GB right now. Before reinstalling the win7 I managed to boot up with 3 sticks of Dominators and 1 stick og 1GB 800Mhz G.Skill. Now It can boot to windows loading screen with 3 dominator sticks crashing after that. With 4 Dominators I get C1 memory code. I have tried no rise up the NB voltage to 1,65v but that didn't help. All the Dominator sticks seem to be working...but only when there is only two of them..