When I turn on Age of Empires 3 it shuts off my computer like someone walked up and pulled the power cord out of the wall. I have all the drivers updated on my video cards and I really don't think they are heating because they are getting good ventillation and I pulled the panel off for extra and it still does it. Everything else I run works fine because I reinstalled Vista 64 bit just recently. I also updated the game in case that was the problem. Anyone know how to fix this?