Laptop mouse wheel not scrolling
4.5
The physical scroll wheel on an external mouse fails to move pages.
Symptoms
- No scroll
- Jumpiness
- Wheel feels loose
Possible Causes
- Dust in sensor
- Mechanical failure
- Driver setting
Step-by-Step Fix
1
Clean the Wheel
Blow compressed air into the wheel gap to remove dust.
2
Check Mouse Settings
Ensure "Roll the mouse wheel to scroll" is set to "Multiple lines at a time".
3
Test on Another PC
Determine if the wheel itself is broken.
When to See a Technician
Mouse wheels often fail due to hair or dust blocking the optical sensor inside the mouse.
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