Processor overheating or how to make infinite lava in minecraft

Well if you changed the thermal paste correctly and that didn't work and you're not overclocking it then the only thing i can think of is buy a new cpu cooler cause yours might be too old.

But you can also clean your case vans and make sure one case fan is pulling air in and one is pulling air out.

Ideally you want a constant stream of air evenly going in and out of your case in one direction.

Like a constant breeze on a hot day.