I'm thinking heating also. Time to find your spray with canned air and clean the vents (and more). Also use a cooling pad; don't put the laptop on a soft surface like a table cloth or your lap.
I've have recently bought Counter-strike:Global Offensive, but sometimes after I've played 15min or so, my computer shuts down random. I think its due heating but im not sure. so I wanted to know what you think?
I also have trouble with my speakers. They work fine when i dont game, but when I start a game or anything that requires any kind of work for my computer, it just cut off the sound. I tried to take my jackstick out and then in. it worked for 2 sec, but then it cutted of the sound again.