My PC Overheats everytime I run heavy software

There are a couple of reasons your laptop is overheating:

• Improper air circulation
  • To fix: ensure all ventilation ports are open, clear, and unblocked. This includes the sides, rear and the bottom of the device.
• Inadequate cooling temperatures
  • The ambient temperatures are too warm. If this is the case, then make sure that the device can get fresh, cool air.
• Inadequate Cooling device
  • This sometimes happens. The laptop is too powerful for the cooling system that its supposed to provide.
• Dust/dirt buildup
  • Most common cause of overheating next to Improper ventilation, the best way here is to take a can of compressed air and blow it into the vent holes to clean it out.

The best thing I can recommend is that you keep it well-ventilated. It overheats due to the processor and graphics working so hard yet the cooling system can't keep up and reaches critical temperatures.

Look up a free program called OpenHardwareMonitor. It allows you to keep an eye on temperatures so that you know how high it may go before it shuts down.