i can't open C,D,E or F drive in My Computers.what do i do?

hai to all,this is a first time iam sending u a post...iam vinay..

iam vinay..i have installed pc game wolfstein..while to start play,iam receiving an error as "couldn't load openGL subsystem " so..iam not able to initiate and play the game...plz give me a proper solution to fix this problem..please....(i think i should download anything....reply...please...)