Sorry, but I'm having a hard time understanding what you mean. No offense. But correct me if Im wrong and what you are trying to say is that you have an overheating problem?
If it's overheating, then clean up you pc and dust it with a can of duster. The ventilations might clogged with dirt and dust, the fact that you pc is old. Also clean out your cpu cooler or heatsink and apply a good thin layer of thermal paste. You maybe need new fans?