Also note where you're actually putting your laptop.
If you have it rested, say, on your bed or on a cushion, or on the arm of a sofa, then be sure that the vents aren't covered up by the cushioning.
That'll stop the hot air from the laptop escaping, and it'll just sit there in the cushioning and will continue to heat up your laptop.
If you can use the laptop as such, place it on a hard flat surface, like a wooden table, or kitchen style counter. Something that isn't going to trap the heat of your laptop.