Why is my Thinkpad t510i getting hot and noisy?

Question

Lenovo

The laptop is not new, of course, it costs an Intel SSD and Win8, while the fan almost always works, which is somewhat annoying. As far as I remember, at the very beginning of work, he worked much calmer.
The cooling system is clean, I changed the thermal paste to Arctic Cooling MX-4, anyway, the cooling is constantly working.
The nutrition plan is balanced. Even on battery power, though not for long, the fan is still noisy. In general, can anyone come across this and know how to win?

Answer 1

Either you applied bad thermal paste or didn’t clean the grilles through which air is blown. And the noise can be from the fact that the cooler bearing is "killed". In theory, a working cooler should not create significant noise.