Hello.
My friend just got Dota 2, but he's unable to play it. Every time he presses "Play", Steam window "Preparing to launch Dota 2..." appears and nothing happens after. I see that he is "in-game Dota 2" for a second, after that he is just online like before.
His DxDiag:DxDiag.txt
We'll really appreciate any help.