i had followed this two steps but still cannot play game.
#3 Aliens: Colonial Marines Crash to Desktop
If your game crashes to desktop after the logo appears, you should try out the following fixes:
Try running the game as “Administrator”
If that doesn’t work, you should set your non unicode language in regional to English UK and then restart Steam. Also re-run the installer in the redist folder to avoid the crash again.
Read more: http://segmentnext.com/2013/02/12/aliens-colonial-marines-crashes-textures-exe-black-screen/#ixzz2L472iRI8
#6 Aliens Colonial Marines – Startup Crash
If your game is crashing with a splash after the start-up screen, you give the following fix a try:
Uninstall the game
Put your unicode language back to your system/ip address language
Set the Steam language to your unicode/system/ip adress language
Reinstall the game with your unicode/system/ip adress language
Read more: http://segmentnext.com/2013/02/12/aliens-colonial-marines-crashes-textures-exe-black-screen/#ixzz2L479tkEg