Brand new Inspiron 5559 overheating and then shutting down

Hi,

I just bought a brand new Inspiron 5559.

Everytime i start playing a game (In this case, Call of duty Ghosts), the computer start overheating, the fan start making a lot of noise, and evantually the computer just shut down..

Like i said, I bought that maching 2 weeks ago.

I saw that the overheating problem is very common, and I already tried doing the steps suggested by DELL-Rishi in that post: 

en.community.dell.com/.../19682126

Still, nothing happend and the computer keeps overheating.

What should i do?