Hi , first my specification : Windows 7 64b I7 920(cooled by noctua NH-U12P) 6 Go RAM Nvidia GTX 295 P6T deluxe motherboard Main HD : WD VelociRaptor - 150 Go Before the "problem" itself you have to know that : None of the component is overheating before the crash, the I7 is at 40° ... I have only tried the demo. After few minutes of play (real-time) I get a black screen ,with a "sound loop" of the last sound before the crash . The only solution is to reboot. I have never