Tip 1: The first step to take to ensure your PC is protected from heat is keeping it in a well ventilated atmosphere. Don't attempt to copy your office IT folks - they place the CPUs on the ground due to lack of office space but as we all know, the floor though seemingly cool, breeds dust and dirt that pose a danger to your PC's cooling system. Remember the good old days when your computer teacher in school instructed the class to enter the PC classroom bare feet. Well, while he may have annoyed many of you, now you know he had a point.
Tip 2: Never expose your PC to direct sunlight as it is harmful for the components resting inside. Placing it in a shady area in the room (preferably not next to your window) will keep it running smooth.
Tip 3: A regular cleaning session for your PC will work wonders. It is natural for the computer to gather dirt inside after substantial usage; this pile of dust ultimately prevents the cooling fans from keeping the system cool. The only way to tackle this is open up the PC case and spray a can of compressed air around the wires, circuits and cooling fans. While this may seem an arduous task, it is not. The PC can be opened with a regular screwdriver. In case of a laptop, you can spray around the cooling vents at the sides and bottom.
Tip 4: One way to ensure your PC doesn't heat up is by shutting it down after use in the night. In case of laptops, which heat up really fast, you might want to switch to standby mode after you are done with your work; doing so will ensure it remains cool when left idle.
Tip 5: Keeping your ears and eyes open will go a long way. If your system is asking for repeated reboots, know there is a problem and most likely it is to do with overheating. Alert yourself to noise - too much noise means your PC requires you to address the heat issue. And if the problem persists, we are afraid, it's time you took it to the service centre.