|"My graphics card is Mobile Intel(R) 4 Series Chipset"|
You've got to do better than that. There are several possibilities. More than likely it's the GMA 950 but it could be slightly better or slightly worse. You need to determine exactly which one you have, then see if you can find it following table. Here's a hint, scroll down to about # 280:
Regardless, due to the crappy Intel graphics, your laptop is not a gamer & there's nothing you can do to turn it into one.