The cooler stops on the processor and the computer, accordingly, freezes - what could be the problem?

Question

Iron

The cooler stops on the processor and the computer, accordingly, freezes - what could be the problem?
The computer is old, about 10 years old. The power supply and video card have recently been replaced.

Answer 1

cooler disassemble - clean, lubricate - reassemble.
but it is better to replace it with a new one.