BSOD playing games on a 2 screen setup

Hey there! I've been having problems with my Samsung RF-711S02 Notebook in the form of BSODs while playing various games. General activity before a crash is as follows: Playing a game on the main screen of the laptop and having a website etc open on my other screen. After a while, the comp starts heating up like mad and then I get a screen freeze that lasts for about a second, after which 2...