MacBook Pro Fan Noise Loud
4.5
Fans spinning at high speed even with minimal apps open.
Symptoms
- Constant whirring
- Hot bottom
- Throttling
Possible Causes
- Dust
- High CPU usage
- Spotlight indexing
- Old thermal paste
Step-by-Step Fix
1
Check Activity Monitor
Find apps using high % CPU.
2
Reset SMC
Fixes power/fan management on Intel Macs.
3
Clean Vents
Use compressed air on the back hinge.
When to See a Technician
Grinding noise means the fan bearing is failing.
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