Computer Fan, Overheating and Power Down Problems

Computers overheat all the time.  Sometimes an overheating computer will not even stay powered on.  This kind of thing is actually very common in laptops of all brands.  Most computers today are designed to automatically power down if the computer, processor, or other component gets too hot.




You can tell if your computer is overheating by checking these symptoms:


  • Computer feels hot, especially around the fan exhaust area.  The fan is blowing out hot air.
  • Laptop or desktop fan runs constantly at high speeds.  You can tell if your fan is being extra loud.
  • Computer shuts down by itself when you haven’t powered it down.
  • Computer shuts down when you are playing video intensive games or watching movies.
  • The overheating or shutting down issues becomes worse over time instead of getting better.




This is usually a result of failing cooling hardware in your laptop or desktop.  This mechanical failure occurs when:

  • The computer fan or fans stops spinning.
  • The fan is spinning too slowly.

When the motherboard has an electrical short and stops sending signals to the fan to spin fast enough to cool the computer.




In many of these instances besides the motherboard electrical short, the fan stops spinning properly due to blocked airflow.  In this case, the fan is spinning as fast as it physically can, but there is something blocking the hot air from escaping the inside of the computer.  At this point the laptop or desktop will power off as a safety measure so that the overheating does not damage the internal components. If you are having overheating problems with your system here are a few things to check:


  • Have you recently installed new hardware into your computer?
  • It’s possible any new hardware added to the machine could cause issues.
  • Does your computer have a virus or malware?
  • Make sure that the fan on the power supply is working for desktops.
  • Are the other fans inside your computer running properly (processor fan or heatsink, video card fan, and case fans?
  • Sometimes your fan will make louds sounds and that would indicate that it is not running optimally.
  • Does your computer boot properly?
  • It is possible that a damaged operating system is causing the hardware to function improperly.
  • Try a system reinstallation.
  • Is the inside of your computer dirty or dusty?





This is usually the reason behind a faulty fan.  Make sure that your computer is clean on the inside and that there is nothing blocking the airflow.Check other hardware.It is possible that other hardware is failing in the computer. Often this is RAM, CPU, Motherboard, Power Supply, or Video card.


You can see if this is the issue by swapping these components with known good parts.


*** Before removing any hardware, make sure you are not encountering this issue because of hardware conflicts.  You can do this by checking the Device Manager for errors. ***


If you are still experiencing fan or shut down issues after these steps you will need to take your computer to a computer repair shop.  You can call iComputer for a fast diagnostic and affordable repair rates!

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