First thing I would do is clean and dust the laptop fans and internals and see if that helps with temperatures at all. Run cinebench (consistent, repeatable load) and record score, max temperature, and max fan speed before and after, should make it easier to see if cleaning had any effect.
Also, you can try increasing fan speed (unless already at max and/or unbearably loud) to try to cool things off. And make sure there the laptop is on a hard flat surface with space under and around it while under any serious load.