How to change the function of the Fn key on Windows 10 and 11
The function keys at the top of the keyboard serve as shortcuts to control certain hardware features.
How to Lock and Unlock the Fn Key in Windows
The Fn key on your keyboard acts as a hidden modifier, activating additional functions on the F1 - F12 keys. If you find yourself constantly needing those functions, here are some easy ways to lock (or unlock) the Fn key on Windows.
1. Lock or unlock the Fn key with the keyboard
On some keyboards, the Esc key acts as the Fn (Function) lock key, usually indicated by a small padlock icon above the Esc key. To lock the Fn key on these keyboards, press the Fn and Esc keys at the same time.
The lock icon will light up to indicate that the Fn key is locked. To unlock it, press the Fn key and Esc again.
2. Lock or unlock the Fn key from the BIOS menu
The BIOS menu on your PC allows you to change a variety of system settings, such as boot order, hardware configuration, and power management options. Here's how you use it to lock or unlock the Fn key:
- Use your preferred method to boot your PC into the Windows Recovery Environment.
- Go to Troubleshoot > Advanced Options .
- Click UEFI Firmware Settings and press Restart on the following screen.
- Once the BIOS menu opens, go to System Configuration and select Action Key Mode .
- Turn off Action Key Mode .
- Also, in the Advanced tab , go to Function Key Behavior .
- Select the Function Key option to lock it.
- Press F10 to save changes, then click Yes when the prompt appears.
If you don't plan on using the Fn key, you can also disable it using the KeyTweak app .
3. Lock or unlock the Fn key via Windows Mobility Center
Windows Mobility Center is a useful tool for configuring common settings like PC brightness and volume. You can also use it to lock or unlock the Fn key. Note that this method may not work if you don't have the Function Key Row in Mobility Center.
- Open Windows Mobility Center using the search menu.
- Locate the Function Key Row section .
- To lock the Fn key, select the Function key option from the drop-down menu. To unlock it, select the Multimedia key option .
Why should you lock or unlock the Fn key?
The F1 - F12 keys at the top of the keyboard can perform two functions. Individually, they perform one action, but can perform different actions when pressed together with the Fn key.
When using the secondary function, you have to press the Fn key along with any function key every time you want to perform a particular action. But if you don't want to do that, use any of the above methods to permanently lock the Fn key.
Fix function keys not working in Windows 10
The Fn function keys give you a quicker and easier way to control some hardware features.
How to Use Windows 11 Quick Assist for Help
Discover how to use Windows 11 Quick Assist for seamless remote support. Learn step-by-step setup, troubleshooting, and tips to help friends or family with tech issues instantly.
Troubleshooting Windows 11 Dual Monitor Lag Fixes
Struggling with dual monitor lag on Windows 11? Discover proven troubleshooting fixes to eliminate stuttering, delays, and performance issues for seamless multi-monitor setups. Step-by-step guide inside.
How to Fix Windows 11 Startup Settings Blank Error
Struggling with the frustrating Windows 11 "Startup Settings" blank error? Discover proven, step-by-step fixes to restore your boot options quickly and get your PC running smoothly again. No tech expertise needed!
How to Activate Windows 11 Enterprise with KMS
Discover how to activate Windows 11 Enterprise using KMS effortlessly. This comprehensive guide covers everything from requirements to troubleshooting, ensuring seamless activation for your business needs.
How to Fix Windows 11 Kmode Exception Not Handled
Struggling with the dreaded KMODE EXCEPTION NOT HANDLED error on Windows 11? Discover proven, step-by-step fixes to resolve this blue screen nightmare quickly and get your PC running smoothly again. No tech expertise needed!
Troubleshooting Windows 11 Motherboard Driver Error Fix
Struggling with Windows 11 "Motherboard" Driver Error? Discover proven troubleshooting steps to fix it fast and get your PC running smoothly again. Easy, step-by-step guide for beginners.
How to Fix Windows 11 Ping Spikes Over Wi-Fi Fixes
Struggling with ping spikes on Windows 11 over Wi-Fi? Discover proven fixes to stabilize your connection, reduce lag, and enjoy smooth gaming or streaming. Step-by-step solutions for instant results.
How to Recover Deleted Photos in Windows 11
Accidentally deleted precious photos? Discover proven methods to recover deleted photos in Windows 11 effortlessly. Step-by-step guides, tools, and tips to restore your images safely.
How to Use Windows 11 Terminal Instead of CMD
Discover how to use Windows 11 Terminal instead of CMD for a modern, efficient command-line interface. Learn installation, setup, and tips to boost your productivity with tabs, themes, and more.
How to Activate Windows 11 Pro Without a Product Key
Discover safe, legitimate ways to activate Windows 11 Pro without a product key. Learn step-by-step methods using built-in tools and official Microsoft options to get your OS up and running smoothly. No risks, no hassle – just pure productivity.
Fixing Battery Drain During Hibernate in Windows 11
Struggling with battery drain during hibernate in Windows 11? Discover expert fixes to preserve your laptop
How to Fix Windows 11 Input Lag for Valorant and CS2
Struggling with input lag in Windows 11 while playing Valorant or CS2? Discover proven, step-by-step fixes to restore smooth gameplay and boost your performance. Say goodbye to delays and hello to precision shots.
How to Fix Out of Memory Error in Microsoft Edge
Struggling with the frustrating "Out of Memory" error in Microsoft Edge? Discover proven, step-by-step fixes to reclaim your browsing speed and stability. Updated with the latest tips for optimal performance.
How to Fix Windows 11 Google Drive Not Launching Fix
Struggling with Google Drive not launching on Windows 11? Discover proven fixes to resolve the issue fast, from restarts to advanced troubleshooting. Get your cloud storage working seamlessly today!
How to Disable Gamebar Presence Writer for Performance
Discover how to disable Game Bar Presence Writer on Windows to optimize gaming performance. Step-by-step guide to reduce lag, boost FPS, and enhance your setup for smoother gameplay. Essential tips for gamers in 2026.