How To Check If The CPU Cooler is Working?

By | August 30, 2021

Do you know how to check if the CPU cooler is working? This blog post will cover the basics. For starters, what does any CPU cooler do?

The primary function of a CPU cooler is to cool down your processor by dissipating heat away from it.

An excellent way to test whether or not your CPU cooling device is functioning properly is by checking for any air gaps in between the fan and heatsink fins on it.

If there are no air gaps, then that means that there’s enough pressure being applied because the heat energy cannot escape through those narrow spaces as easily as without them.

There are also other ways which I’ll go into more detail about later in this article!

How To Check If The CPU Cooler is Working
How To Check If The CPU Cooler is Working

How to Check If The CPU Overheating?

To check if the CPU is overheating, you can read the temperature from an application or use a hardware monitor.

But why not just check straight on your computer?

Most of the newer CPUs are equipped with thermal sensors that detect and report temperatures directly through BIOS; fans have their sensors to control their speed.

CPUs will automatically throttle their speed (lower) to prevent damage. These features were designed for laptops but still can use on desktops.

To check the temperature, you need a program that displays CPU temperatures.

There are many applications out there like CoreTemp and SpeedFan, but if you want a free one that works well, use Motherboard Monitor (MBM).

In MBM, click on “Current Sensor” or “Monitoring,” then select the CPU. If your motherboard supports it, go to a 4-pin CPU fan connector.

How To Check If The CPU Cooler is Working?

The CPU cooler is the cooling fan that blows the cold air to cool down the computer processor.

You need to check if it is working properly because when it breaks, you might think your computer has broken as well.

This article aims to teach you how to check if your CPU cooler works and provide some advice on repairing it.

Step One: Find Your CPU Cooler Location

You can find the location of your CPU cooler in your motherboard box or instruction manual. It should look similar but not the same for all motherboards/computers. For most computers, the CPU cooler is put on top of the power supply.

Step Two: Remove The Cover

To check whether your CPU cooler is functioning properly, you will need to remove the computer case’s cover and look at its internal components.

After you removed that part, you can see some wires, and there should also be a huge fan blowing cold air at your motherboard. (If the computer doesn’t have a fan, then it needs to be replaced.)

Step Three: Check And Clean If Needed

If everything is working properly, then proceed to close up the computer. But if there is something wrong with the cooling system, such as the fan does not blow cold air, you should clean it up or replace the part.

Step Four: Test For a Few Hours

After you have checked your CPU cooler, it is time to test if your computer is still working properly.

It is recommended that you check for a few hours just in case something happens after closing everything up again and turning on the power switch.

If the fan starts to make noises while working or sounds like water splashing coming out of your monitor, you know that there is no problem with the computer.

Step Five: Contact The Computer Manufacturer

You know how to check if your CPU cooler is working or have tried the instructions in this article and still can’t fix it. Then all you need to do now is contact the computer manufacturer or a professional technician who will help you find out what is causing the problem with your motherboard/computer processor and how to repair it.

How to Check If The Liquid Cooler Is Working

If you have a question like, how to check if the liquid cooler is working? It seems interesting to you. There are various ways of checking.

You need to do the following checks on your liquid cooling system and then check how fast it gets to respond in the below cases:

When there isn’t any heat source around your CPU, if you see the temperature of your CPU still low, even though no performance requirement needs a high-speed CPU, this case means that your liquid cooling system is working well, so the flow of coolant is good enough and stable.

Ensure the thermal pad and compound aren’t deteriorated or leaking; take some thermal pads for testing. Press them on the CPU and check if the temperature drops.

If your CPU is under load, you can see how fast the cooling performance is by watching the temperature of liquid and CPU heat sink; And then compare them with thermal pad. If there’s no drop in temperature while using the thermal pad, it is fine to use.

Another method to test how coolant works are to apply a little substance like soap on copper tubes (or stripped wire), dry them off, put some ice cubes on those cleaned areas, or try blowing air over them and see how long before they get cold.

Heat transfer depends upon several factors such as surface area, fluid quality & speed of flow, etc. However, this will give a general idea of what to expect with this type of processor.


I have broken down the process of checking if a CPU cooler is working in this blog post. The post also features some common terms like CPU fan not working, which are explained in detail.

Check out our home page if you want to read more tech blogs regarding computer tips and tricks.

Thank you for reading the informative blog post.