When I run the game for a while (10-20 minutes) my system loses power and reboots. This bug occurs in no other games than DayZ.
I've stress tested my system with prime95 and Furmark running synchronously without failiure. This should rule out power consumption or overheating.
System logs simply show that power was lost, sometimes I see my keyboard backlight flicker before it shuts down, perhaps it has to do with the way the game handles input?