• A computer's central processing unit (CPU) is responsible for carrying out the calculations necessary for a computer to run. When a CPU performs calculations, it draws electricity from the motherboard and generates heat. If a CPU gets too hot, it can hamper computer performance and may cause permanent damage. Computers are often designed to shut down automatically if the CPU reaches a certain temperature; users can also take steps to prevent overheating.
  
  

Computer Use

• The way you use a computer determines how hard the CPU and other hardware components must work. The more demand on your CPU the more heat it will generate, which can lead to overheating and crashes. One way to make your CPU run cooler is to avoid taxing activities. Avoid running many programs at the same time--"multitasking"--to reduce the CPU load. Avoid running programs that require a large amount of CPU power, such as graphical and video editing software or computer games, until you can take more permanent measures to reduce CPU heat.
  
  

Computer Cleaning

• Computers' internal cooling systems typically consist of several fans and a heat sink to draw heat away from the CPU. Over time, dust and other debris can build up inside your computer and reduce the airflow created by fans, hampering your computer's ability to cool the processor. Open your computer's case every few months and use a product called "canned air" to blow dust away from the CPU heat sink and fans.
  
  

Install New Cooling Hardware

• If your CPU overheats when the computer is clean and operating under normal conditions, you may need to install new cooling hardware. Replacing your fans and heat sink can significantly reduce your CPU's temperature. Installing new case fans can also promote airflow and divert heat away from the CPU. Running your computer with the case open and an external fan blowing across it can also help reduce your CPU's temperature; only use this method, however, while planning for more permanent upgrades.
  
  

Environmental Conditions

• Another factor that can influence CPU overheating is the environment in which you use your computer. Using it outside in hot weather, in a hot room, or in direct sunlight can increase CPU heat. Try to use your computer indoors on hot days, in cool rooms like your basement, or in a well air-conditioned room and in a spot that does not receive direct sunlight.