Although it isn’t frequent, sometimes your computer acts abnormally. From twitches in the screen to making loud noises suddenly, anything is possible. As there is a lot of hardware involved, this is expected.
But what about the CPU fan spins then stops all of a sudden? That’s something to panic about because you might end up with a dead computer.
If you have experienced this, you are not alone. That is why we are here to share our experience and solution to this CPU fan suddenly stopping problem.

How to Solve ‘CPU Fan Spins Then Stops’ Issue?
Of all the reasons that your CPU fan might stop, it isn’t the memory to be blamed. Rather something very important has gone wrong this time.
Here are the two problems that shut your fan off for a technical reason.
1. Processor Not Compatible With Motherboard
While upgrading our motherboard or processor, we don’t pay much attention to them. Although most of them have the same port or pins and will fit on your motherboard, some don’t fit with one another.
This is the case for most users. We have done the same with our PC while an upgraded processor didn’t fit with an old motherboard. Hence, we had to dial back to the series that fitted with it.
Check your processor and motherboard compatibility. If you are not familiar with these things, you can go to your local computer store and they will solve it for you.
2. Outdated BIOS
Another reason for the CPU fan to stop working after a few seconds is that while you have upgraded your processor or motherboard, the bios need to be updated too. Old bios on new hardware don’t work side by side.
The solution is pretty straightforward, you have to update your BIOS and everything will be fine.
To update your BIOS, you have to know the information about it and then download it from the manufacturer’s site.
Press Windows+R and then type “msinfo32”. This will bring out your computer’s system information. And you will find your bios information under “BIOS Version”. Search with it and download the file.
Step 1: Press Windows+R and then type msinfo32. This will bring out your computer’s system information.

And you will find your BIOS information under BIOS Version.

Step 2: Search for it online and download the file. You will need to make a bootable USB stick to install it.
Frequently Asked Questions and Answers
Why does my CPU fan start and stop?
The reason your CPU fan starts and stops suddenly can be one of two reasons. Either the BIOS is outdated or your processor and motherboard aren’t compatible. Download the latest bios driver from the manufacturer’s website. If it doesn’t work, you will need to take it to the computer lab and get it checked out.
What happens if the CPU fan stops working?
If the CPU fan stops working, your computer system will freeze. You won’t be able to do anything as the computer operating temperature will exceed. The best thing to do is to shut it down and check for hardware faults.
Is it normal for the CPU fan to stop?
It’s not uncommon but it can happen. An outdated bios, not compatible processor and motherboard, or even an old PSU can cause this trouble. You should check the hardware first and then check the drivers to solve this problem.
Conclusion
When a CPU fan stops it definitely will skip a heartbeat. But as concerning and shocking as it is, the best way to solve the problem is to first turn off the pc and let it rest. Afterward, check the bios and hardware components for compatibility and change them.
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