Yes I know and thank you a lot because of your help. And ye, I and my friend'll buy S1 or S2 license for much fun. We really liked this game.

Yes. I clearly play the game now. I was using Tweak and I had a 2300cc setup. When I load that setup and drive the car my game had crashed. I changed the setup and I can play the game now. I used to play with 2300cc setup but there was no problem. Nmv it is working now. Thanks for everything.

I tried to restore my system and I couldn't.. at the first time it said that ''you can't restore your system because of some virus guarding programs try to close them''. I was using McAffe and it already wasn't working. I tried to delete it but it was imposibble.. I spent 2 hours and finally I deleted it and started to restore my system again. But, it didn't work again.. says same thing............
Ahh..
I am gonna mad now I was trying to play game and I played 20min but again it closed down itselfs.

Yes, before the problem has started I was playing a game(won't give the name may be its forbidden. i didn't read the rules.) and my FPS isn't good. I downloaded somethings and I did some changing. I thought the problem derives from this things and I changed them default but again nothing happnened.

Intel Core i7-3700CPU 3.40GHz 3.90GHZ, 8GB RAM, NVIDIA GeForce GT 420

Ahh.. Im really tired because of this problem and I have smashed my keyboard i don't know why..
Nevermind. There is no problem when I entered the game and drive my car, but almost 5min later my game close down itself. It says that ''LFS.exe has stopped working''. I searched it a lot, I found somethings and I
tried them but nothing happened.. It says the same thing again. I play this game almost 1 week and there was no problem. It started to crash midnight of yesterday.

Please, help because I really like this game and play with my friend. It is all about drifting.