Laptop function keys not working
4.5
The Fn keys (brightness, volume, etc.) do not respond.
Symptoms
- Fn keys unresponsive
- Standard F1-F12 work but not Fn features
- No on-screen display
Possible Causes
- Missing hotkey driver
- Fn Lock enabled
- BIOS setting
Step-by-Step Fix
1
Toggle Fn Lock
Press Fn + Esc (or the key with a lock icon) to toggle Fn Lock.
2
Install OEM Hotkey Driver
Download the "Hotkey Utility" from your laptop manufacturer's site.
3
Check BIOS
Look for "Action Keys Mode" or "Function Key Behavior" in BIOS.
When to See a Technician
Function keys usually require a specific driver from the manufacturer to interact with the OS.
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