Hello I just bought the game, installed it and started playing. I took perhaps 3 turns then my laptop suddenly went blank. Same thing happens every time when I run it, though the amount of time differs from 2 minutes to maybe up to 10... I have an emachines laptop with Athlon64 , 512 Mb ram, Ati mobility radeon 9600 64mb. It's so annoying, so I thought more people must have experienced it but I didn't find any post of it on these forums. I don't get any error messages or anything, it just shuts down. I have upgraded display drivers, cpu driver, chipset driver, soundcard driver and civ4 to 1.52. No change. Can anyone help?