(adsbygoogle = window.adsbygoogle || []).push({}); I have had portal 2 for a while and it seemed to be working fine. i then turned my new PC of one day and it installed windows 7 new updates. when i turn it on i can play the game for about 2 min. then it will exit out saying and error Like "Portal 2.exe has stopped working". can anyone help.

PC specs

Prosseser- AMD Phenom x4

Graphics card- Nvidea GTS 450

4 gigs of ram

windows 7 32bit

Did you buy the game or crack it?