Laptop fan running loudly
4.5
The cooling fan spins at maximum speed even during light tasks.
Symptoms
- Whirring noise
- Constant fan activity
- Vibration
Possible Causes
- High CPU usage
- Dust in fan
- Failing fan bearing
Step-by-Step Fix
1
Check Task Manager
See if a background process is hogging the CPU.
2
Clean the Fan
Remove the bottom cover and clean the fan blades.
3
Update BIOS/Firmware
Manufacturers often release updates to optimize fan curves.
When to See a Technician
A grinding or clicking noise usually means the fan hardware is failing and needs replacement.
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