Ok, it must be the psu cutting out that causes reboot... I have a raidmax rx730-ss. I kn0w its not a good brand but i have it and must make do.. =). It looks like the grphics card runs off one rail and everything els off the other, but im n0t sure.. If it is like that, how do i make the card use both? I have a ati 4890 and it has 2 pcie power connectors on it. So could i just make an adaptor from molex to pcie? Would that solve the prob? Thanx