How to Troubleshoot a Laptop Fan That Is Not Working

To troubleshoot a laptop fan that is not working, clear blocked vents, restore an appropriate cooling mode, and run your model’s hardware diagnostic. If the laptop is immediately overheating, shut it down and let it cool first. On some ASUS models, a stopped fan is normal below its activation temperature.

Follow the instructions for your exact laptop and its supplied utility. The Windows settings steps below use Windows 11 menus. Avoid prolonged gaming or stress testing simply to force a suspected failed fan to start.

Check whether the fan should be running

Check your model’s cooling design and the conditions when the fan stops. ASUS says some laptop fans remain stopped below their activation temperature, while some models use passive cooling without a fan. The threshold depends on the model, so do not apply another laptop’s temperature rule to yours.

A silent fan during light use needs a different response from a stopped fan accompanied by overheating or a diagnostic failure. On supported ProArt laptops, Whisper mode can intentionally stop the fans during light workloads. Check the selected cooling mode before treating that behavior as a broken motor.

Let the laptop cool and clear its vents

Shut down an immediately overheating laptop and let it cool before continuing. Place it on a hard, flat surface and clear anything blocking the vents. If it also shuts off unexpectedly, follow the checks for a PC that randomly turns off as you investigate the cooling problem.

For an ASUS laptop with fans and ventilation openings, shut it down and unplug it before cleaning. Use canned compressed air from a distance, keep the can upright, and avoid powerful air compressors. Follow the precautions to clean a laptop fan safely, and seek service for substantial internal dust accumulation.

Once the laptop has cooled and its openings are clear, check its cooling preset and run the appropriate hardware test. Do not keep applying a heavier workload to see whether the fan eventually starts.

Restore the cooling mode for your model

Use the cooling utility supplied for your exact model, especially if the problem began after a profile change. On supported ASUS laptops, open MyASUS, select Device Settings, then open ASUS Intelligent Performance Technology and select an appropriate mode. Some models show Fan Mode instead; gaming and ProArt laptops use their respective utilities.

On supported ASUS ROG or TUF laptops using Armoury Crate 6.0, open ARMOURY CRATE > Operating Mode and select Performance to restore a balanced preset. For maximum airflow, connect AC power and select Turbo. If a custom curve preceded the problem, inspect Manual on models that support it, keeping your model’s battery restrictions in mind.

For supported ProArt laptops, open ProArt Creator Hub > Dashboard > Operating mode and choose Standard mode. Older ProArt models expose Fan Mode instead. Switching away from Whisper mode helps you distinguish intentional quiet operation from a persistent fan problem.

On supported Dell laptops using Dell Optimizer 6.1.1, open Dell Optimizer > Power & Battery > Thermal Management and select Cool or Optimized. The Cool setting increases fan speed. Thermal controls are unavailable on unsupported systems and disabled after a system fan failure, so continue to diagnostics if you cannot use them.

Dell identifies Dell Power Manager as discontinued, and its transition guidance lists both Dell Power Manager and MyDell as past their December 31, 2025 end of support. Dell says Dell Optimizer 6.x replaces both applications for most Dell computers, so check compatibility with your model before installing it.

On supported MSI notebooks, open the model’s supplied MSI utility and choose User Scenario > Extreme Performance, select the gear icon, then open Advanced Settings. Under Fan Speed, select Auto to restore temperature-based control or Cooler Boost to request maximum cooling, then select Save. Some versions use Apex Mode instead.

If an MSI custom curve preceded the problem, select Advanced in the fan settings, adjust the temperature-stage percentages, then select Save. Do not set every stage to 0%. If Advanced is absent, MSI says your model may not support custom fan curves; use an available preset instead. If changes are ignored, restart and retry, using the steps to restart a computer when unresponsive if necessary.

For Acer Nitro ANV16S-41/61 laptops, open NitroSense > Scenario > Fan Control and select Auto to restore automatic control or Max to request maximum fan operation. Other NitroSense generations can differ, so follow your model’s instructions. If the fan remains stopped during the appropriate check, continue to hardware diagnostics.

Run your laptop’s hardware diagnostic

On Dell laptops with the SupportAssist or ePSA preboot interface described here, restart and press F12 at the Dell logo, then select Diagnostics. After the quick test, select ADVANCED TEST, uncheck Select All, and select the listed fan components, whose names vary. Select Thorough, then RUN TEST, and record any error and validation codes.

Alternatively, on a supported Dell Windows laptop using the current SupportAssist interface, save your work and connect AC power. Open SupportAssist > Support, select Test my hardware, then select Get started. Under I want to troubleshoot my PC, select I want to check a specific piece of hardware and choose the fan component if available. If it is missing, use the preboot route if your model offers it.

On supported ASUS Windows 11 laptops, open MyASUS, select System Diagnosis, then open Diagnostic Tool. Check Fan and select Checkup. If the option is absent, that diagnostic is unsupported on your model, so continue with applicable software checks or seek service for persistent symptoms.

For HP laptops with HP PC Hardware Diagnostics UEFI, turn on the laptop and repeatedly press Esc, then press F2 and select Component Tests. Choose the available Fan Speed Test or Fan Thermal Test, select Run once, and record failures. Test availability varies; if neither fan test is listed, contact HP for the appropriate next step for your model.

On MSI notebooks exposing hardware diagnostics, open MSI Center > Features > Hardware Diagnosis > Auto Scan and select Start. Select OK after the scan finishes. Contact MSI service if the problem remains.

Restart and diagnose a Mac with a fan

For an Apple silicon Mac laptop containing a fan, connect power and choose the Apple menu > Restart, or shut down and turn it on again. Apple says the system management controller resets automatically on Apple silicon.

To run Apple Diagnostics on a Mac laptop, shut down, disconnect unnecessary peripherals, and retain AC power. On Apple silicon, hold the power button until Options appears, release it, then hold Command + D. On Intel models, hold D at startup, or use Option + D if necessary.

When offered an offline choice, select Run Offline unless Apple initiated an online session. In macOS Tahoe 26 and later, select from the offered tests; earlier versions run diagnostics automatically. Record any reference codes for service.

Reduce excessive heat while investigating

On Windows 11, right-click Start, select Task Manager, open Processes, and select CPU to identify unexpectedly demanding apps. Close an app creating excessive load. Under Startup apps, right-click unnecessary programs, select Disable, and restart, leaving security software enabled.

To reduce power demand on Windows 11, open Start > Settings > System > Power & battery > Power mode. Choose Balanced or Best power efficiency for Plugged in and On Battery. If a custom power plan prevents those choices, open Control Panel > System and Security > Power Options and select Balanced.

These changes reduce demand while you investigate heat, but they cannot repair a failed motor or directly switch the fan on. If the fan fails a diagnostic or cooling errors persist, arrange service instead of relying on a lighter workload.

Update the software that manages cooling

For Intel-based Dell Windows laptops, open SupportAssist > Home > Update Software and select Start. Install recommended updates and restart. Dell identifies missing or outdated Intel Dynamic Tuning software as a possible cause of thermal-management problems.

On supported ASUS laptops, open MyASUS, select System Update, select relevant offered packages, then select Update selected items. Review Update History afterward. Only newer applicable packages appear, and package names vary by model.

If PredatorSense is missing or malfunctioning on an Acer Predator notebook, visit Acer Drivers and Manuals and identify the laptop by serial number, SNID, or model. Select Application, then select Download beside PredatorSense, extract the package, and launch its installer. Use this route only for a model for which Acer supplies PredatorSense; if it is not listed, continue with support for your model.

Address persistent HP errors and arrange service

For HP laptops reporting cooling errors 900, 909, 90A, 90B, or 90F, a power reset is an applicable troubleshooting step after cleaning. HP warns that a reset may provide only enough temporary operation to save important files before service. Save those files during that window instead of treating temporary operation as proof that cooling is fixed.

HP says a power reset can reset recorded thermal values. On a laptop covered by HP’s power-reset instructions, shut down, unplug AC power, and disconnect nonessential peripherals, discs, and memory cards. Hold the power button for approximately 15 seconds, then reconnect AC power and start the laptop.

If cleaning, the power reset, and an applicable BIOS update do not clear the HP fan error, contact HP Customer Support. For a BIOS update, identify your laptop through HP Software and Drivers and follow the instructions for that exact model.

A failed hardware test or persistent cooling error is a reason to arrange service. Keep the diagnostic error, validation, or reference codes so you can give them to support. For substantial internal dust, seek service rather than treating repeated exterior cleaning as a complete repair.

Frequently Asked Questions

Can a cooling pad fix a laptop fan that has stopped working?

A cooling pad can improve airflow, but it cannot repair a failed fan. Use it as an airflow aid while addressing the underlying cooling problem.

Does every Lenovo laptop use the same fan shortcut?

Check your model’s guide before using an operating-mode shortcut; on the Legion 5i, 16-inch, Gen 10, press fn + Q to cycle modes, or switch modes in Legion Space or Lenovo Legion Zone. Choose Balance for automatic adjustment. On that model, Performance may be unavailable on battery or with an under-rated adapter.

Can an HP OMEN laptop clean its own fans?

On OMEN MAX 16 Intel models equipped with Fan Cleaner, open OMEN Gaming Hub and use Fan Cleaner to run cleaning manually or change its schedule. The feature reverses the fans between gaming sessions to expel dust. Check your model’s features before applying this option to another OMEN laptop.

Can you replace a Surface laptop fan yourself?

Open Microsoft’s Surface self-repair page, select your model, and consult its Service Guide and replaceable-component list to check whether the fan is replaceable. Repairable parts differ by model, and professional service is an alternative.