Sony Vaio VPCF1 Overheat, how to solve

I own an Intel Core i7 laptop SONY Vaio VPCF1 series. But I have an annoying problem on it. Everytime I play my favorite game says PES2013 on it, after few minutes it automatically shut down because of overheat. How to solve this problem? I searched around the net and still can’t get any solution so far.

I was advised to download and install Speedfan to check the fan speed. But I am not sure if this is a good way to solve it. What should I do, please help Sad smile