I buy mw3 and multiplayer dont work

[Bloodfocus]

I buy mw3 and i load it , then i click multiplayer and the the game close and get me back to the main pc directory , what should i do for fix that?

[d0h!]

erm so you see a black screen and the game closes itself?

[Bloodfocus]

@d0h! yes it do that , then it open me staem idk why

[d0h!]

it opens steam?
so you got the game on steam already or not?
it sounds a bit like that you just installed the game from the internet

[Bloodfocus]

no i buy it

[d0h!]

then update your system by using windows update, install the latest graphics driver etc...