[Xiaopang]

i assume you mean config.cfg and i also assume the original cfg works. try the following: open the modified config.cfg and set "@p.hardware" to 0. that's the only option that should be able to screw up your game. please report back if this actually worked out. if it didn't the only idea i'd have would be to change each value back to the original one and try the game after each change until you find the culprit that prevents your game from starting. would also be nice if you posted what kind of graphics card you use. could you also be more specific what exactly happens when you start a game? do you see an error message? could you make a screenshot?