Hello,
You can try some troubleshooting steps to fix this issue but I am not sure the game crashes are caused by the same element since you all have a different system configuration, unless we can detect a common factor.
This following article provides some basic troubleshooting steps, the same as ecsmeik mentioned (updating drivers, run the program as an administrator...)
Game crashes to Desktop on Windows Vista / Windows 7
Also, here are the System Requirements you did not mentioned your Operating system but Windows 8 is not on the list.
Have you overclocked, or underclocked your Graphics Cards, or even better, changed voltages? This can also cause crashes as the cards are supplied too little/excess voltage and shutdown to stop damage. Also try to re-install your graphics drivers (ATI cards crash a LOT).
