The Function Lock is enabled/disabled by pressing the Escape key (on the top row next to the F1 to F12 keys) and Function key (on the bottom row next to the Windows button) together like a toggle switch.
How do I turn on the Function key on my Dell laptop?
To enable it, we’d hold Fn and press the Esc key. To disable it, we’d hold Fn and press Esc again. It functions as a toggle just like Caps Lock does.
How do I lock and unlock the Fn key?
1] Lock and Unlock Function (Fn) key on Keyboard If the function lock key is present on your keyboard, simply press the key and the Fn key to lock Fn keys. To unlock Fn lock, repeat the action again. The Fn lock key is represented by a lock symbol and located under the Esc (Escape) key on most standard keyboards.
