How to Disable Fn key on Lenovo Laptop

To disable the Fn key on a Lenovo laptop, press Fn + Esc. This locks the Fn key so you can use F1 through F12 as direct function keys without holding Fn each time.

If the Fn + Esc shortcut doesn’t work on your model, you can permanently disable it through the BIOS settings. This guide covers both methods.

What are Function Keys?

Function keys are located at the top row of the keyboard, labelled F1 through F12. They act as shortcuts for common tasks like adjusting brightness, volume, and connecting to displays.

Common Lenovo function key actions include:

F1: Mutes and unmutes audio
F2: Lowers speaker volume
F3: Increases speaker volume
F4: Mutes and unmutes the microphone
F5: Lowers screen brightness
F6: Increases screen brightness
F7: Manages external display options
F8: Airplane mode on/off
F10: Bluetooth on/off

Method 1) Disable Fn Key Using Fn + Esc Shortcut

The quickest way to lock the Fn key on a Lenovo laptop is the keyboard shortcut.

Press Fn + Esc simultaneously
The Fn key is now locked — F1 to F12 will work as direct function keys
Press Fn + Esc again to toggle it back to hotkey mode

Method 2) Disable Fn Key Using BIOS

This method permanently changes the Fn key setting so it persists across restarts.

Turn on your laptop and press F2, F12, or ESC repeatedly to enter BIOS
Navigate to the Configuration menu

How to Disable Fn key on Lenovo Laptop Using BIOS

Find Hotkey Mode and set it to Disabled
Press F10 to save and exit BIOS

Once saved, your F1 to F12 keys will work as standard function keys without needing to hold Fn. If Hotkey Mode is not visible in your BIOS, check Lenovo support for your specific model’s configuration options.

How to Disable Fn Key on Lenovo Laptop

Where is the Fn Key on a Lenovo Laptop?

The Fn key on Lenovo laptops is located in the bottom left corner of the keyboard, between the Ctrl key and the Windows key. The function keys (F1 to F12) are in the top row above the number keys.

FAQ (Disable Fn Key on Lenovo Laptop)

What is the shortcut for disabling the Fn key on Lenovo?

Press Fn + Esc to lock the Fn key. Once locked, you can use the F1 to F12 keys directly without pressing Fn. Press Fn + Esc again to unlock.

How do I permanently turn off the Fn key on Lenovo?

Go into BIOS by pressing F2 or F12 during startup, navigate to the Configuration menu, find Hotkey Mode, and set it to Disabled. Save and exit. This change persists across restarts.

How do I enable the Fn key again on Lenovo?

Press Fn + Esc again to toggle the Fn key back on. In BIOS, set Hotkey Mode back to Enabled to restore standard hotkey behavior.

How do I use the Fn key on my Lenovo laptop?

Hold down the Fn key and press a function key (F1 to F12) to activate its hotkey action. For example, Fn + F1 mutes audio and Fn + F10 toggles Bluetooth on Lenovo laptops.

Conclusion

The easiest way to disable the Fn key on a Lenovo laptop is the Fn + Esc keyboard shortcut. For a permanent solution that survives restarts, change the Hotkey Mode setting in BIOS to Disabled.