How To Fix A Laptop Fan | See How

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How to fix a laptop fan really depends on what the fan is doing. A high-pitched whining noise probably indicates it needs to be replaced. A noisy fan running at high speeds might just need to be cleaned of dust and debris.

If you’ve asked how to fix a laptop fan, either open up the laptop and replace the fan or blow air into the vents to clean it. See below.

Clean Or Replace Your Laptop Fan

Laptop fan replacement and/or cleaning will vary by manufacturer, but the process is relatively the same as you open up the laptop to access the fan. Below, I’ve listed the steps for some Lenovo laptops.

Noisy Laptop Fan

A noisy laptop fan is most commonly caused by a build-up of dust. Dust builds up in and around the fan and vents causing less efficient heat dissipation. Use a can of compressed air to blow out the dust buildup. See below on how to do this.

Another cause of a loud fan is the laptop generating a lot of heat, either due to heavy processing or a blockage of the air vents. Make sure to not rest the laptop on a soft surface such as blankets and close unneeded applications. Read ‘Why Does My Laptop Overheat‘ for tips and solutions.

Many laptops such as HP allow you to adjust the power usage. Under Control Panel, locate Power Options. Select the power saver mode if appropriate.

Check power setting, close applications and clean dust from the fan.

How Do I Replace The Fan On My Lenovo Laptop?

Replacing the fan on Lenovo laptops will vary but the fan on many models can be reached by removing the back cover. The overall process is to remove any external battery, remove the back cover and finally unscrew and remove the fan assembly.

I’ll demonstrate how to replace the fan on several models below. Also check out my article: Lenovo Battery Not Charging |New Solutions if you need solutions to battery issues.

Thinkpad And IdeaPad Laptops:

Replacing a fan on a Thinkpad or IdeaPad can be done by most users in only a few steps. Check with Lenovo Support to locate the maintenance manual for details on your specific model.

The steps are as follows:

  1. Remove the Thinkpad external battery
  2. Remove the back cover(base cover assembly). Several screws will need to be removed, some of which might be different lengths so remember where they go. Gently pry up the cover so as to not crack it.
  3. Locate the fan assembly and remove several screws holding it in place along with fan cables. Gently lift out the fan.

Legion Laptops:

There are a few different designs of Legion laptops, some with two individual fans and some with a thermal module containing the fans.

The steps are:

  1. Remove the back cover(lower case). Several screws will need to be removed, some of which might be different lengths so remember where they go. Gently pry up the cover so as to not crack it.
  2. On some models: Remove the SSD plate by unplugging the connector and unscrew it.
  3. Disconnect fan cables and remove screws holding fans in place or thermal module.

Yoga Laptops:

Yoga laptops are so compact fan removal is a little more detailed. Again, check the manual for details on your model. And if your machine is under warranty send it in for repair.

The steps are:

  1. Remove the back cover(base cover assembly). Several screws will need to be removed, some of which might be different lengths so remember where they go. Gently pry up the cover so as to not crack it.
  2. Remove the speaker assembly. Just unclip it and pop it out.
  3. Remove the battery. Detach it’s cable and unscrew it from the board.
  4. Unscrew and remove the disk drive.
  5. Locate and remove the wireless-LAN card.
  6. Remove any M.2 drive from it’s slot.
  7. Remove the system board. The system board is very sensitive, do not drop it. Detach all the connections and unscrew it.
  8. Locate the fan assembly and remove several screws holding it in place along with fan cables. Gently lift out the fan.

Some models of Yoga laptops have you remove the keyboard to be able to access the fans from the top.

Note that Lenovo recommends the following:
Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked a in the following illustration. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. If a fan assembly needs to be reused, remove and reapply thermal grease.

Check your Lenovo Warranty Status to find out if you can have your laptop serviced for free.

How Do I Test The Fan On My Lenovo Laptop?

The internal fan speed is temperature-controlled, meaning it will run faster and louder when the laptop gets hotter.

To test the fan on a Lenovo laptop, locate the air vents and either feel or put your ear up to these vents. You should be able to hear the fan spinning or feel warm air blowing out. This will indicate if the fan is working or not.

Check air vents for air flow and run diagnostics to test fan operation.

These fans get dusty over time, so a useful maintenance procedure is to use a can of compressed air and blow into the vents to blow dust out.

Open the Lenovo Vantage program from Windows and run a hardware scan on system components. Read my article: Lenovo Diagnostics Tools for more information.

How Do You Clean The Fan On A Lenovo Laptop?

To clean a fan on a Lenovo laptop, start by using a can of compressed air and blow into the laptop’s air vents.

For further cleaning, open up the laptop to access the fan, see above on how to do this. Without removing the fan, just blow compressed air into the fan and fan assembly. This should be sufficient to clean the dust out of the fan and vents.

A can of compressed air cleans dust from the fan and vents.

Note that if the fan is making squeaking, grinding or high pitched sounds, that is an indication the fan is going bad and you should go ahead and replace it.

How Much Does It Cost To Fix A Laptop Fan?

The cost to fix a laptop fan can be about $50 USD to purchase a new one. If you have the laptop serviced you are looking at the cost of a new fan plus labor charges, possibly $150 U.S.

The first step is to try to clean out the fan yourself, if you still experience issues check your warranty status. A faulty fan can be replaced as a warranty item. See above for instructions on how to clean a fan.

About $50 US if you make the repair and about $150 US for a repair shop to handle it.

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Summary

This article answered how to fix a laptop fan as well as some other common issues. It was written around Lenovo laptops but will apply to laptops in general.