Instructions
Unplug all the PlayStation console's cables, and then plug them back into the console. This will help reset all the wiring.
Remove the PlayStation console's hard drive, and then replace it.
Restart the PlayStation console.
Prevent the overheating from occurring in the first place. The PlayStation console's indicator light will begin to blink red and green when it senses the machine is beginning to overheat. Watch for this indicator light. Also, allow the console to cool every few hours, set it in a well ventilated area, and keep it dust free.