Loud computer fans may indicate that something is wrong and it should not be ignored.

Fans may sound unimportant, but they are essential computer components that need regular maintenance.

Unless you’re using water cooling, you need your fans to draw the heat from components like the CPU to keep them working.

In this article, you’ll learn why your computer fan is so loud, why it matters, and what you can do about it.

Why is my computer fan so loud?

Your computer fans get loud due to high internal temperatures caused by 100% disk usage, high RAM use, dirt and dust in the vents, or lack of airflow. Your fan may occasionally get loud, but if it starts to rattle loudly, you should look into it.

All computers slow down over time, missing frames when playing videos, doing tasks less smoothly, and crashing more frequently. However, if your computer fan suddenly becomes so loud that it rattles instead of just buzzing, you should take quick action to identify the cause before the issue worsens.

You may enhance its performance right now and increase the longevity of your computer by determining the cause of a loud PC fan. A smart place to start is by running a hard drive test to identify issues and eliminate bloatware and other PUPs (potentially unwanted programs).

How to fix loud computer fans?

You can fix your loud computer fan with a few simple steps. Here are  6 quick tips to keep your computer quiet:

  1. Clean your computer fans
  2. Increase airflow around your computer vents
  3. Close background apps and processes
  4. Use fan control software
  5. Replace your fans
  6. Maintain your computer regularly

Regardless of the state of your fan, using the following tips will prolong the life of your computer. Using fan fix solutions even if you don’t need to make your fan quieter should enhance its performance, and you’ll end up with a much faster computer.

Here are more detailed tips on how to fix your loading computer fan:

Clean Your Computer Fans


Although it may seem obvious, the more you use your computer, the more dust and other dirt get stuck inside. A few sprays of compressed air should just be enough to remove any dust and clean your computer fans.

Whether you’re using a desktop computer or laptop, you can use compressed air,  air duster, or a special electric air duster vacuum to remove built-up dust.

Dust removal should make your computer’s fans work a little less hard to keep it cool, which will make the PC generally quieter (if the fans are working correctly).

Move your computer or laptop for better airflow


It’s crucial to check that nothing is blocking your computer’s vents, especially fabrics and other objects that can make the device overheat.

To ensure uninterrupted airflow, it is ideal to use your computer on a flat, sturdy surface. You should move your computer outside if it is inside an enclosed area, such as a desk cabinet, so that air may freely circulate through its fans.

A hotter computer means that your fans will have to work harder to keep it cool, which will make them louder. A laptop set up on a surface that can block your fans follows the same rule.

You should notice a cooler computer and quieter fans as a result of allowing your desktop PC or laptop’s fans enough air to do their work.


Check the running software on your computer

When your computer is running the most demanding apps, the fans typically run the hardest. An issue with software or malware may be present as well if your computer’s fans are loud even when your PC is not in use.

For instance, certain spyware (like cryptominers) utilizes your idle PC for other purposes. This can happen without you knowing. That’s why it’s important to frequently scan your computer for malware.

If malware isn’t the problem, check the Windows Task Manager, which you may access by pressing Ctrl + Shift + Esc on your keyboard. Under the Processes tab, you’ll see the list of active apps, background processes, and any other resource usage.

If your CPU or memory percentages are locked at 100%, your computer is in overdrive, and you’ll need to pause, disable, or delete any overactive apps that are causing the problem.

Use Fan Control Software

If your computer fans are too noisy, you can reduce their speed with third-party fan control software. However, if your PC has a heat problem that your fans aren’t solving, this isn’t a good idea, as a hot PC or laptop might cause damage.

Some motherboard manufacturers, such as MSI, provide their own fan control software. However, SpeedFan is a useful third-party app for Windows users. You may use this program to check the current temperature of your PC and adjust the fan speed to suit your device’s requirements.

Monitor your computer’s temperatures carefully if you choose to lower the fan speed. If the temperatures remain too high, you’ll need to revert to the previous settings to ensure that your fans can efficiently cool down your PC.

Replace your fans

Replacing Computer Fans

If you’ve done everything mentioned above and none of them solves your problem, there’s only one option left: replace your computer fans.

Even with routine maintenance, fans don’t last forever, as all other PC components do.

Make sure to do your research on what specific fans you’ll need in order to get the best deal possible. You can easily buy them at local stores or on Amazon.

However, if you want to save some money and time, you can take a look at our new and refurbished computer hardware in our shop.

Do regular computer maintenance

The most common cause of a loud computer fan is dust and dirt, so as part of your monthly PC maintenance practice, pull out a compressed air can and give your PC or laptop a quick blast of air to clean it. Keep in mind that computer fans that are too loud are working too hard, which may affect how well your PC performs in general.

Of course, the noise from your computer is not limited to just the fans. Other whirring computer noises are most often caused by components such as your hard disk, especially if it is failing. Your computer won’t last forever on its own, but some routine maintenance should let it continue to function for many years to come.