I should clarify what I said in my last post a bit. When I say set GPU voltage to 1v I mean for bootup / 2D clocks, 3D voltage is fine as is. As I said though, this is only a possible workaround. The problem is primarily with compatibility issues with GTX460s on a fair few boards. Both mobo manufacturers and nVidia should issue a new BIOS resolving the bootup issue. The driver for GTX460s doesn't really have anything to do with these bootup issues as the driver hasn't even had chance to initiate at that stage