Your laptop may get overheated sometimes while playing games or mining and it can cause your system to crash or freeze. It may start a fire also(but is extremely rare).
So, to cool it down, i suggest you to follow the two ways:
Clean your air vents with a dry cloth as dust can block the entry of cold air.
Put a cloth over the inhalation vents. Don't cover the exhaust vent.
Use a small laptop cooler which you can place below your laptop.
Use a good antivirus. Some viruses may run in background and consume power.
Follow these steps and you would be free of overheating.
If you have some more ideas then feel free to comment.
