Following are the effect on CPU when crossing the maximum temperature. The CPU life span is being declined. The computer start regularly freezes out and sometime by chance reset or else the CPU get damaged. Or some time a BOSD is being displayed during installing the operating system and this is because of overheating or some time in between the computer start creating problem. And to prevent the CPU from getting damaged due to overheating you should the proper CPU cooler fan and even apply the Thermal paste on the CPU.