Portal 2, every 2-3 seconds brakes ! Please Help ! I have a powerful computer. and all the other games on the computer works fine. - (Even with the highest parameters options). but "Portal 2 " constantly pulls the image every 3 seconds.- Regardless of the setting. with minimal parameters exact same problem arises :(. I tried to reinstall, thought to help, but to no avail. I remember reading somewhere that it's possible default error game. but the solution wasn't found. what to do? Please HALP! p.s. Sorry ...

When I press play button in steam it launches the game but after it loads (the portal 2 picture) it just closes, help me please.

it says disk error when i try to play it...what should i do ?

I cant find a way to submit a ticket to reset my achievements for portal 2, so I'm posting this here...

Goodbye