hey turtletrax, did you try the other card? how about a pci card? try holding down home while booting? try hitting the onboard reset button when it suspends on f7. because I have had this intermittently when i played with pci-e settings granted I never had it happen @ stock. and before you send it back try a different psu just in case. also worth a try would be some cheap ram 667 or above though the last few are just shots in the dark they still might save you a week of waiting for rma(if your lucky)