How To Check Laptop Fan Is Working Or Not? [ 3 Easy Ways]

If your laptop is overheating, lagging, or making strange noises, your cooling fan may not be working properly.

The quickest way to check if your laptop fan is working is to listen carefully right after startup — you should hear the fan spinning. If there is no sound and the laptop gets very hot quickly, the fan may be faulty.

Why Checking Your Laptop Fan Matters

The fan is your laptop’s primary cooling system. It pulls cool air over the processor and graphics card and exhausts hot air out through the vents.

If the fan stops working, heat builds up rapidly. This can cause thermal throttling (where the CPU slows down to reduce heat), unexpected shutdowns, and eventually permanent hardware damage.

Method 1) Listen for the Fan

The simplest check is to listen when you turn on your laptop.

Turn on your laptop and place your ear close to the vents (usually on the bottom or sides)
Within the first 30 to 60 seconds you should hear a faint whirring sound as the fan spins up
You can also feel for warm air being pushed out of the exhaust vent

If you hear nothing and the area around the vents stays cold even as the laptop warms up, the fan may not be running.

Method 2) Use a Fan Control Software

You can monitor your fan speed in real time using free software tools.

Download and install HWiNFO or SpeedFan (both free)
Open the application and look for the Fan section
The fan speed will be shown in RPM (revolutions per minute)
A healthy laptop fan typically runs at 1500 to 3000 RPM under normal load

If the fan RPM reads 0 or N/A while the laptop is hot, the fan is likely faulty or not being detected.

Method 3) Check BIOS for Fan Readings

Some laptops show fan speed data directly in the BIOS. This is useful if Windows is not loading or if fan software is not detecting the fan.

Restart your laptop and press F2 or Delete during startup to enter BIOS
Look for a Hardware Monitor or Fan section
Check if a fan speed reading is shown
If the fan reads 0 RPM while the laptop is warm, the fan is not working

Signs Your Laptop Fan is Not Working

Laptop gets very hot quickly even during light tasks
No audible fan noise during startup or heavy use
Laptop shuts down unexpectedly due to overheating
Performance drops noticeably (CPU throttling)
Fan icon shows 0 RPM in monitoring software

What to Do If Your Laptop Fan Is Not Working

First, check if dust is blocking the vents. Use a can of compressed air to blow dust out of the exhaust vents. This is the most common cause of fan issues.

If cleaning does not help and the fan still shows 0 RPM, the fan may have failed and needs to be replaced. If your laptop is still under warranty, contact the manufacturer for a repair.

FAQ (How to Check Laptop Fan)

How do I know if my laptop fan is working?

Listen for a faint whirring sound shortly after startup and feel for warm air coming from the vents. You can also use HWiNFO to check the fan speed in RPM. A reading of 0 while the laptop is hot indicates a problem.

Is it bad if my laptop fan is always running?

A constantly running fan usually means your laptop is running hot. Check that the vents are not blocked, close resource-heavy background applications, and consider cleaning the vents with compressed air.

Can I run my laptop without a fan?

You can, but it is not recommended. Without a fan, the CPU and GPU will overheat quickly, causing thermal throttling and potentially permanent damage to the processor and motherboard.

Final Words

Checking your laptop fan regularly is a simple maintenance habit that can prevent overheating damage. Use the three methods above to confirm your fan is running, and clean the vents with compressed air every few months to keep airflow clear.