The fan in my laptop hasn't been working for some time and the laptop is running hot. When I checked the temperature of the CPU it shows an average of 80 degrees C when running a few tasks. Task manager shows the CPU running at 100% when I'm only running Firefox and 5 download tasks on IDM. I suppose the slow performance is related to the heat issue but I'm not sure if there has been a permanent damage to the motherboard or CPU.
Besides fixing the fan, is there a need to replace the motherboard+CPU as well?