Many computer today are designed to turn off or automatically reboot if the computer, processor, or other device in your computer gets to hot. If you have heard any abnormal noises coming from your computer recently such as a high squealing this could indicate a fan may be failing in your computer.
First, verify the fan on the power supply is working by examining the back of the computer and seeing if the fan is moving and moving smoothly. For all other fans in the computer you need to either open the computer and verify all fans are working, e.g. processor fan and case fan.
A temperature gun like that shown in the picture can also be used to help gauge how hot components or integrated circuits are running the computer.
Tip: If your BIOS monitors the RPM of the fans enter CMOS Setup and verify it does not report any errors.
Note: If this is a laptop computer, there is still a fan located on one of the sides of the laptop that can be checked. Make sure this fan is blowing or that you can feel hot air coming from the laptop. You may also consider getting a cooler pad if you find your laptop is getting hot often.
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