@themediaso47697 start with the overheating issue first. Disassemble your laptop, clean the air vents and the inside of you computer. Then check teh fan and consider replacing it. You also want to repaste the thermal paste on your processor since it is most likely no longer doing it's job.
Use this guide [guide|72411] for the fan and the heatsiink. To apply new thermal paste use this generic guide [guide|744]
Once cleaned, new fan and thermal paste applied, check your laptop and see if it comes on. It is possible that you may have thermal damage to either the CPU or other parts on your computer. You have to deal with cooling first, then troubleshoot for whatever does not work. Let us know what you find out.