If you’re experiencing an issue where your CPU fan spins for a few seconds and then stops, it’s likely that there is a problem with either the fan itself or the computer’s power supply.
In this article, we’ll go over some potential solutions to this issue.
A CPU fan is an essential component of a computer’s cooling system, as it helps to regulate the temperature of the processor. When the CPU gets too hot, the fan will spin faster to cool it down.
However, if your CPU fan is spinning and then stopping, it’s likely that there is a problem with either the fan or the power supply.
Common Causes
There are a few common causes of this issue, including:
- A faulty or damaged CPU fan
- A weak or failing power supply
- A clogged or dusty fan

Troubleshooting
If you’re experiencing this issue, there are a few steps you can take to try and fix it:
- Check the CPU fan to make sure it’s not damaged or faulty. This can be done by visually inspecting the fan blades for any damage or debris, or by using a program like SpeedFan to check the fan’s speed.
- If the fan appears to be in good condition, the next step is to check the power supply. This can be done by opening the computer case and looking for any loose or damaged cables. You should also check the power supply itself for any signs of damage.
- If the power supply appears to be functioning properly, the next step is to clean the CPU fan. Over time, the fan can become clogged with dust and debris, which can prevent it from spinning properly. To clean the fan, you can use a can of compressed air to blow out any dust and debris.
How do I know if my CPU fan is dying?
There are a few signs that can indicate that your CPU fan is dying or failing. These include:
- The fan makes a loud or unusual noise when it’s running. This can be a sign that the fan blades are hitting something or that the bearings are starting to wear out.
- The fan doesn’t spin as fast as it used to. Over time, the fan’s bearings can wear out and cause the fan to spin more slowly. This can result in the processor overheating, which can cause the computer to shut down or crash.
- The fan doesn’t spin at all. If the fan isn’t spinning at all, it could be because it’s damaged or because the power supply to the fan has failed. This can cause the processor to overheat, which can lead to the same problems as a slow-spinning fan.
- The fan turns on and off repeatedly. If the fan is turning on and off rapidly, it could be a sign that there is a problem with the fan’s control circuit. This can cause the fan to spin up and down rapidly, which can be loud and annoying.
If you’re experiencing any of these symptoms, it’s a good idea to replace the CPU fan as soon as possible to avoid any potential damage to the processor. You can purchase a new CPU fan from a computer parts store or online retailer.
Make sure to choose a fan that is compatible with your computer and processor.

Can a faulty CPU cause shutdown?
Yes, a faulty CPU can cause a computer to shut down. The CPU, or central processing unit, is the brains of the computer, and is responsible for executing most of the instructions that the computer receives.
If the CPU is faulty or damaged, it can cause the computer to crash or shut down.
There are a few different ways that a faulty CPU can cause a computer to shut down.
For example, if the CPU is overheating, it can cause the computer to shut down to prevent damage to the processor. This can happen if the CPU fan is not working properly or if the CPU is being overworked.
Another way that a faulty CPU can cause a computer to shut down is if it is not functioning properly.
This can happen if the CPU is damaged or if it is not compatible with the other components in the computer. In this case, the computer may not be able to start up at all, or it may crash or shut down randomly.
If you suspect that your CPU may be causing your computer to shut down, it’s a good idea to have it checked by a professional.
They can diagnose the problem and recommend a solution, such as replacing the CPU or repairing any other damaged components.Try again
Final Thoughts
If your CPU fan is spinning and then stopping, it’s likely that there is a problem with either the fan itself or the power supply. By following the steps outlined above, you can troubleshoot the issue and hopefully fix it.
Remember to always handle your computer’s components carefully, and to shut down and unplug the computer before performing any maintenance.