4 Ways To Fix Laptop Fan Noise – No More Buzzing!

We’ve all had to deal with irregular laptop fan noise before, so we should all learn how to fix it. Lucky for you I have found 5 ways that you can fix this annoying sound coming from your laptop fans.

A noisy laptop fan can be fixed by cleaning the fan, replacing it, tightening screws or potentially fixing software.

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Solution #1 Clean your laptop

The first solution is an obvious one, but it has to be done. A build-up of dust and dirt can cause your laptop fans to have more friction and create buzzing sounds.

Dust also traps heat and makes your laptop’s airflow restricted which can make your fan speed up a lot to compensate.

If your computer is out of warranty this is a good option for you before paying for a repair shop to fix it. However, if your computer is under base warranty or extended warranty you might want to check the rules because sometimes your warranty can be voided if you open the case.

Laptops have a really hard time with airflow compared to a desktop because it has a smaller fan size and airflow space. I recommend cleaning your laptop twice a year from the inside especially if you have pets that leave a lot of hair around.

When you open up the case you should use a can of compressed air so you don’t damage any components by touching it, it’s also a lot easier to do.

Sometimes it can be really hard to get towards the laptop fan after opening hte case, most motherboards are upside down and the fan is covered by other components.

You don’t have to full disassemble the laptop, you can just take off the bottom case and then use compressed air to get rid of the dust. Although the best way to do it would be to take off anything that is covering the fan and then spray it with the air.

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Solution #2 Use Air Compression And Brushes

There’s a solution for people who are not allowed to open their laptop case and that’s to buy a can of compressed air and use it to loosen and blow away any dust in the air vents.

You can also use small brushes to further clean it out and dislodge any dirt or dust that’s been trapped in there for a long time. I also recommend carefully trying to shake or tip your laptop to let any dust fall out, you don’t want to damage the components by doing this uncarefully.

Make sure you turn your laptop off when doing this and after you’re done start it up again and see if you can notice where the heat is coming out of the laptop.

Use the compression can of air to blow air through the front vents located underneath the trackpad and towards the back of the laptop. This will blow dust out the back of the laptop towards the exhaust vent.

You don’t have to worry about the fans speeding up and ruining the bearings when doing this method because laptops are so thin and light, so the fans are pretty robust. It’s very hard to ruin a fan by using a can of compressed air.

After you spray the intake fans, also spray the side fans and see if any dust comes out.

Solution #3 Cool Down Your Laptop

Excessive heat can cause laptop fans to speed up above their usual RPM and cause a lot of noise. If your laptop is making this noise while idling then you might have an issue with malware or bloatware.

You can fix bloatware by going to your control panel and uninstalling any programs that you don’t use. HP and Dell come with a lot of bloatware programs that come with the stock laptop, you want to remove these if possible.

Another method to fixing software and getting your laptop running faster is to reinstall a fresh version of windows. Most laptops come with their manufacturer software and this can slow down the machine a lot. If you install a clean Windows package without the software, then your laptop should cool down.

Get antivirus and scan for any malware that is hogging your system. You’ll be surprised to find some things if you have never done this before.

If you are playing games this could be the cause too.

You can prop up your laptop on a book or a hard surface to create more airflow to the vents and stop overheating.

Solution #4 Go To A Laptop Repair Shop

This is your last solution and the final one on this list. I recommend trying the others before you pay for a laptop repair. If your laptop is covered under base warranty or extended warranty then you can most likely send it in for free and get it checked.

You can ask the repair shop to replace the fan for you with a new one and also clean out the inside of your laptop.

Reasons Why Your Laptop Fan Is Noisy

There are many reasons why your laptop fan can be noisy and generally, these problems occur after using it for a while and not as soon as you get it.


Reason number one is that your laptop is overheating. When a laptop overheats, the fans are signalled to speed up by the system to prevent any melting of components. Overheating can be caused by a number of reasons:

  • You are playing GPU-demanding video games
  • You are running too much intensive software at once, like Google chrome
  • You have malware that is hogging your system or mining crypto in the background.
  • You have a lot of dust stuck in the air vents and inside the fan causing friction.
  • Your laptop chassis lacks proper airflow and needs to be propped up on a book.

You might also be using the laptop in a hot climate. Some laptops also have really bad thermals which causes overheating, this can be fixed with a BIOS update if your manufacturer releases a fix.

Old Fans

Laptop fans wear out over time and this could be the cause. Cheap fans will eventually start to rattle and make noise if used for many years. You can get your fan replaced if you are under warranty or order a replacement part to do it yourself.

The fan model can also be bad which is causing noise problems. Another reason is that some laptops are just built to be noisy, I recommend looking on Reddit to see if other people have the same issue with your laptop model.

You could also have some screws that are loose on the fans which are causing the issue. The only way to fix this is to open up the case and tighten it yourself or send it in for repair.

Hard Drive Failure

Hard drives get old and when they do, they have all sorts of problems. A lot of laptops now have SSDs but if you have a hard drive then this may be the culprit of your issue.

Hard drives don’t have fans but they have disks that spin super fast and sometimes make rattling sounds if something is wrong mechanically in the component. This can happen by just dropping your laptop or moving it around too much, or simply just by having an old hard drive.

On average my hard drives only lasted 1.5 to 2 years of use before they started to bluescreen and make noises. In my PC I had a hard drive that was making a really wierd rattling sound and it was fixed when I replaced it.

The Bottom Line

Laptop fan noise can be super annoying, especially when you are trying to work. Unfortunately there are not many ways you can fix it without having to get technical and opening up the chassis.

If you are under warranty you should contact your local repair shop or your laptop manufacturer and see if they can resolve the issue. If you are not under warranty then I suggest opening the case up yourself and cleaning it completely.

Frequently Asked Questions (FAQ)

Why is my laptop making a fan noise?

Your laptop fan is making a buzzing or rattling sound because it’s RPM is too high. This is caused by overheating of the system from excessive software, malware or bloatware. Another reason for a loud fan is build up of dust within the case.

How can I clean my laptop fan without opening it?

You can clean your laptop fan without opening it by using compressed air with a nozzle and brushes. You can aim the compressed air at the vents under your laptop where the fan is located to dislodge any dust. A brush will come in useful as well.

How do you fix a noisy fan?

You can fix a noisy fan by cleaning out the fan and the inside of the laptop. Removing any unnecessary software, removing malware, or updating your BIOS. Another way is to remove any obstructions to airflow around the laptop. Placing your laptop on a hard surface or a book is the best way for maximum airflow.

With over 12 years of experience with laptops, Grayson Uppington has delved deep into the tech world, always learning and sharing. His top pick is the Lenovo Legion Slim 5, blending performance with style. Formerly a pro gamer in CS:GO, those tournaments sharpened his skills and heightened his appreciation for laptop potential.