Thanks for your response but I am using ATI all other games work fine and do not crash the system. I am using Vista x64 SP1 and the updated display drivers. This is not a ATI problem or Vista do to it's not crashing World-In-Conflict, Command-And-Conquer, Free-Space2. But I hate to say it but it looks like Sins
. I disabled crossfire and used only 1 of the 3870 not luck but it did take a lot longer to crash hours.
The new update will sport a new graphics engine right?