How to disable the fn key on a desktop computer (Windows 10)?

Question

Keyboard

There are no similar settings in the BIOS, the keyboard is the simplest, on a string. The manufacturer (hp) does not provide any software configuration utilities. Physically, no fn key combinations disable it. It's inconvenient every time you need to press the f1-f12 keys, multimedia functions work - you always need to hold down fn.

Answer 1

Option 1 - "fix" the keyboard itself programmatically. Your keyboard itself decides what code to send to the computer. And takes into account the Fn key. That is, you need to change the keyboard firmware so that it sends the F1, F2 ... F12 codes to the computer without pressing the Fn key.
If you find a keyboard firmware update utility or disassemble the device and consider the firmware to be a programmer, I can try to help
Option 2 - "fix" the keyboard itself in hardware. Just close the Fn key at all. This can cause problems - fewer simultaneously pressed keys supported, changing the functionality of other keys besides F1..F12, it all depends on the implementation of the keyboard, you need to check.
Option 3 - "customize the keyboard". I'm sure it's possible to configure the Fn key programmatically. But I don’t know how to get special software for keyboard configuration. It may not be available in the public domain. And in order to create your own - again, you need to examine the keyboard firmware (see point 1).
By the way, on a similar HP Premium USB Keyboard, there is a switch at the bottom with a lock symbol that is responsible just for the Fn key. And on yours - in the upper right corner there is a button with exactly the same padlock symbol. Try pressing it.
Option 4 - reassign the reaction of the computer to the reverse. That is, when receiving the command to "decrease the sound", react as to F1 and vice versa. Through the AutoHotkey program, described in more detail here
https://h30434.www3.hp.com/t5/Desktop-Hardware-and...
Cons - it will work only when Windows is running, additional software is needed, it will be impossible to work with F1..F12 on normal keyboards, etc.

Answer 2

F-Lock