If you're cleaning your laptop for the first time after a long time of usage, it's probably best to get it opened then clean the insides, whether you're doing it on your own, or a repair store. I've had it happen to me before. I dusted my laptop for the first time after 2 years of usage, and all it did was make dust cluster together and not fix my overheating/shutdown issue.
But now that you mention it's a laptop, the temperature doesn't seem too surprising. Just make sure the laptop isn't on some soft surface that restricts its airflow. You can also get a laptop cooling pad to get more air flowing.
28-Dec-2015 16:56:53