How to Disable Fn Key on ASUS Laptop (3 Easy Methods)

To disable the Fn key on your ASUS 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 that shortcut does not work for your ASUS model, this guide covers all the methods to disable or lock the Fn key so it does not interfere with your workflow.

What is the Fn Key on an ASUS Laptop?

The Fn (Function) key is located at the bottom left of your ASUS keyboard. It works together with the F1 through F12 keys to perform special actions called hotkeys.

For example, pressing Fn + F5 may lower screen brightness, while pressing F5 alone refreshes a web page. Some users prefer to use the F1 to F12 keys directly without pressing Fn each time, especially for programming or gaming.

Here are some common ASUS Fn key functions:

Fn + F1: Sleep mode
Fn + F2: Turn Wi-Fi on or off
Fn + F5: Lower screen brightness
Fn + F6: Increase screen brightness
Fn + F10: Mute or unmute audio
Fn + F11: Lower volume
Fn + F12: Increase volume

Method 1) Disable Fn Key Using Fn + Esc (Fn Lock)

The quickest way to disable the Fn key on an ASUS laptop is to use the Fn Lock shortcut.

Locate the Esc key on your ASUS keyboard — it usually has a small lock icon on it
Press Fn + Esc simultaneously
The Fn key is now locked — you can use F1 to F12 directly without pressing Fn

To re enable the Fn key, simply press Fn + Esc again to toggle it back on.

Method 2) Disable Fn Key Through BIOS Settings

If the Fn + Esc shortcut is not available on your ASUS model, you can disable the Fn key from the BIOS settings.

Restart your ASUS laptop
Press F2 or Del repeatedly during startup to enter the BIOS
Navigate to the Advanced or Configuration menu using the arrow keys
Look for Function Key Behavior or Hotkey Mode
Change the setting from Hotkey to Function Key
Press F10 to save and exit the BIOS

Once this is done, your F1 to F12 keys will work as standard function keys without needing to hold Fn.

Note: BIOS layouts vary by ASUS model. If you cannot find the Hotkey Mode option, check the ASUS support page for your specific model.

Method 3) Disable Fn Key Through ASUS MyASUS App

Some newer ASUS laptops support Fn key configuration through the MyASUS application.

Search for MyASUS in the Windows search bar and open it
Go to Customization or Keyboard settings
Look for the Fn key lock or Function key mode option
Toggle it to your preferred setting and save

If MyASUS is not installed on your laptop, you can download it free from the Microsoft Store.

Where is the Fn Key on an ASUS Laptop?

The Fn key on ASUS laptops is located in the bottom left row of the keyboard, typically between the Ctrl key and the Windows key.

On most ASUS models, the Fn Lock indicator is shown as a small lock icon on the Esc key. When Fn Lock is active, the indicator light on the Esc key will turn on to show the lock is enabled.

FAQ (How to Disable Fn Key on ASUS Laptop)

How do I toggle the Fn key on my ASUS laptop?

Press Fn + Esc to toggle the Fn Lock on and off. When Fn Lock is on, the F1 to F12 keys work as standard function keys. When it is off, they perform the hotkey actions shown on the keycaps.

How do I permanently disable the Fn key on ASUS?

The most permanent way is to change the Function Key Behavior setting in the BIOS. This setting persists across restarts and keeps the Fn key in your preferred mode without having to toggle it each time.

How do I enable the Fn key on my ASUS laptop?

Press Fn + Esc to re enable the Fn key if it has been locked. In the BIOS, change the Function Key Behavior setting back to Hotkey mode to restore the standard Fn behavior.

Why is my ASUS Fn key not working?

If the Fn key is not responding, try restarting your laptop first. If that does not fix it, update your keyboard drivers in Device Manager. On some ASUS models, you may also need to reinstall the ASUS keyboard hotkey driver from the ASUS support website.

Conclusion

Disabling the Fn key on your ASUS laptop is simple using the Fn + Esc shortcut.

If that does not work on your model, the BIOS method offers a permanent solution that persists across restarts. The MyASUS app provides an even easier option for supported models.