when i start the game one msg appears told the games must running in safe mode..and i clicked yes
but nothing happen..when i open up task manager shown the game not responding...what should i do now?
any suggestion..help me

First of all, there is a dedicated technical support thread for MW2 just rite below it. Please refrain from making a new one in future unless the old one has been closed.

And about your problem try reinstalling the game. Make sure you have the latest Directx9 as well as the latest graphic card driver. ty