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Fn Button Lock


Knowing how to use the functions keys or F-keys on your keyboard can make your life easier. Just a single key from this set can perform two sets of commands, be it a multimedia command or a specific task. By pressing the Fn button together with one of those keys, you can immediately change how the keys work. Doing it every time you use them, however, is not necessary since you can simply lock and unlock the Fn key in your Windows 10 or Windows 11.




Fn Button Lock



The Fn key in your keyboard is basically like the Shift and CapsLock buttons. And if you often create documents, you know how they work: you hold Shift to capitalize a letter or two and release it to quickly go back to small letters, while a single press of CapsLock will let you compose entire sentences in uppercase without holding another key.


Meanwhile, locking the Fn key in Windows 10 or 11 is permanently putting the function keys to their alternate commands until the lock is disabled. While locked, you can also press the Fn key to quickly access the standard command of the function keys: just like what happens when your keyboard is on CapsLock, and you use Shift to type a letter in lowercase.


Locking and unlocking the Fn key vary depending on the computer you are using or, to be specific, the brand of your PC. And the way that not all the commands of F1 to F12 are the same in all computers, not all keyboards also have the same keys dedicated for locking and unlocking the Fn key. Thankfully, there are a variety of ways to do it.


One way to use your keyboard to lock the Fn key is through the F Lock key, which you can simply press to toggle between the standard and alternate commands. Keyboards that have it usually have a light signal to indicate if the F Lock key is activated or not.


If your Fn keys by default controlled media e.g., volume, playback, etc, turning on the Fn key lock will make it so that the Fn keys now execute the secondary function that F1-F12 do e.g. F1 opens Help in an app or F12 opens the web console in your browser.


If you don't want to keep holding down the Fn key, Windows gives you the option to permanently lock it. This will allow you to utilize F1-12's secondary operations without pressing the Fn key. Below, we discuss multiple ways of locking and unlocking the Fn key in detail.


The F1-F12 keys can perform another secondary function apart from their default behavior when used in combination with the Fn key. However, you must press the Fn key every time you want to perform the alternate function. To make it more convenient, you can lock the Fn key, which will enable it permanently.


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If the advices above haven't solved your issue, your PC may experience deeper Windows problems. We recommend downloading this PC Repair tool (rated Great on TrustPilot.com) to easily address them. After installation, simply click the Start Scan button and then press on Repair All.


If you have the [NumLock] key, you can use it to enable and disable the numeric keypad on your keyboard. If it is disabled, you will access the second assignments of the keys, even without using the Fn button. If your keyboard does not have the [NumLock] key, use the following shortcuts to enable or disable the Fn key.


The Fn button can additionally be used in conjunction with the command dials to create shortcuts for further functions such as Choose Aperture, Active D-Lighting, HDR and Choose Image Area. To do this, in step 3 (above), select Press + Command Dials, then make your choice from the options menu shown. You then access your chosen function by keeping the Fn button depressed while rotating the indicated command dial.


If your keyboard has an F lock key, you can press it to toggle between the standard commands and alternate commands. When the F Lock light is off, alternate functions work (Help, Undo, and so forth). When the F Lock light is on, standard functions work (F1, F2, and so on).


The fastest way to lock or unlock the Fn key is to use the keyboard settings. If you indeed have a function lock key, directly press it and the Fn key to lock Fn keys. To unlock Fn lock, repeat the operation again.


You can enable or disable the Fn key from BIOS. Disabling or locking the Fn key changes dual-use keys into single-use. Nevertheless, the method to lock the Fn key via BIOS or UEFI settings requires your system to have advanced BIOS options.


If you want to enable function lock on the All-in-One Media Keyboard, press the Fn and Caps Lock key simultaneously. To disable the Fn key on this keyboard, repeat the operation again.


On my Dell XPS 15, it seems to be as simple as me accidentally pressing the Fn Lock button behind the Escape key. If you have this problem, simply hit Fn+Esc and it should revert back to normal, without having to go into the BIOS


On my Dell laptop I pressed Fn + Esc and the problem is solved for me. If you closely notice, there is a small lock (Fn written on it) sign on the Esc. Apparently, you can change the default behavior of Fn key using Fn + Esc.


On my Samsung Notebook 9 Pro, there is a "FN Lock" key to the right of the F12 key that reverses the FN buttons. It lights up like the Capslock key when it is activated so you always know when its on.


Fn key lock is not accessible on all keyboards, and this is entirely dependent on the manufacturer and has nothing to do with drivers or a Windows 10 feature. The default function of the Fn keys on a PC is specified in the BIOS.


We have discussed how you can lock the Fn key on your keyboard and how you can unlock it. You can also perform other functions with the same key, and it is easy, especially when you follow the correct approach.


To fix the issue, you have to disable the Fn key on Windows 10 PCs. For this, you have to tap on the Type here to search taskbar button. After this, you have to enter advanced startup in the search box. Then, you have to hit on Changed advanced startup options in order to open the window. Now, you have to tap on the Restart now button for advanced startup. If your desktop or laptop restarts at the blue Advanced Boot Options menu, then you have to select Troubleshoot and Advanced Options. Here, you need to select UEFI Firmware Settings and then Restart to enter the BIOS settings. After this, you should look for an Action Key Mode setting on the System Configuration or on other tabs. At last, you need to disable the Action Key Mode setting.


Choose the role played by the Fn button on optional wireless remote controllers equipped with an Fn button. See Custom Setting f1 (Custom control assignment, 0 f1: Custom Control Assignment) for more information.


Press Win + X or right-click the Start Menu button on Windows 10 to open the power menu and select Mobility Center. Alternatively, you can go to the Control Panel and navigate to Hardware and Sound > Windows Mobility Center.


This method is for those who have a Windows laptop with the Fn lock key on the keyboard. The quickest way to disable the Fn key and use the standard function keys instead of the special features, no need to enter the BIOS settings for changing it.


Whenever you restart your laptop or start by pressing the power button, a quick screen with a logo at the start comes by and this is where you can access the function key and the rest of the system settings.


To use the AE and AF Lock, adjust the composition so that the camera can find the proper focus and exposure. Filling the frame with the subject works best. Press the shutter button halfway to focus. Now, press and hold the AE/AF-L button.


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