buy a 4890 and call it fixed :haha: j/p, I haven't really done any overclocking under Win7 yet so I'm not really sure what to suggest. If there was a way to manage the card and 3D settings without CCC (i.e. Rivatuner + ATT) I would maybe try that but I'm not sure RT can even run under 7 yet. Of course the real problem seems to be Driver Signing which I have no experience with, so I guess either figure that out or it's a bust. What about Beta drivers that are unsigned, would that yield the same problem?