i can't find the csc folder

[Miruna CupcakesMonster]

hello hello. i tried to play portal 2, but i have a problem to launch it. never mind, i searched on the web and i found out that i need to change something in the csc folder. well, i searched it in the windows folder but i didn't find it. i changed the folder options (to not hide system folder blabla)-->no result. i ran thins command too:REG ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\NetCache" /v FormatDatabase /t REG_DWORD /d 1 /f . any ideas?

 

[hang-the-9]

Is this a legal version of the game? What exactly happens when you try to start it? Does our system meet the requirements for the game?