How to Run a Diagnostic on a Computer to Check a Fan


A computer's CPU must be kept cool if it is to function properly. When it overheats, it can slow down, freeze the system or even shut the computer off. This not only disrupts your work, but also damages the computer. If you believe your CPU is overheating, your fan may be to blame. There are several pieces of software available for you to monitor and adjust your fan speed to keep your computer at the appropriate temperature.

Things You'll Need

  • Hardware control software
  • Download a hardware control program, such as SpeedFan for Windows or Fan Control for Macs.

  • Launch the program. A window should open displaying statistics about your fan and CPU temperature.

  • Examine the fan speed. If it is unusually high or low, there may be a problem with your fan. An abnormally high CPU temperature can also indicate that your fan has malfunctioned or is running too slowly. Most programs provide a way to manually set the fan speed, if necessary.

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