Hello, before I start, I know this has been posted before I just can't find an answer that works!! I had the same problem yesterday, When I installed the game. My laptop wouldn't even switch on properly yesterday, That is now fixed and I'm still having game issues. I Installed steam then Just Cause, took about 2 hours. It said it was ready to play so I clicked played, A black screen comes up, flashes a few times, the a box comes up. Error Fatal DirectX error! Code: 15 Result: 0x80070057: E_INVALIDARG The game will now exit. Try starting the game with /failsafe if the problem persists I have windows 7 Home premium x64 I'm only 13 so I don't know how to do much on laptops so don't be to harsh please.