For this specific computer, the NP-130 Samsung. The fan tends to be smaller than your usually laptop computer.
The circulation inside that cools the computer is weak and can cause heat, which makes the computer shut down completely.
Best would be to clean the Fan from dust, the build up of dust is the main cause for the fan to not operate at its full potential.
Also, replacing the fan may be a better idea, if you reference yourself back to the Guide about Fan, it will explain full how to replace the fan if needed.