For a less invasive, software-based toggle:

Here’s how to flip the script.

There are a few ways to use function keys without the Fn key:

Press Fn + Esc (or whichever key has the padlock) to toggle the lock.

Press Windows + X and select Mobility Center . Some laptops (especially Dell) have a "Function Key Row" setting here where you can choose between "Function Key" and "Multimedia Key."

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