Windows 10: My fn keys are not working?

So my computer works fine, but for some reason the function keys were switched up. When I'm on the desktop, they don't do anything at all, and when I'm in Google Chrome they do things that aren't related to what they're supposed to do.
F1 used to mute/unmute, now it opens the internet browser and searches Bing for Windows 10 help.
F2 rewinded, now it doesn't seem to do anything.
F3 paused and played, now it opens the page search on the internet browser.
F4 fast forwarded, now it does nothing.
F5 change fan speed, now it refreshes the page.
F6 used to exit full screen mode, now it functions essentially like a tab key but only for boxes I can type in.
F7 dims my screen, and it doesn't do anything now
F8 brightened screen, now it does nothing
F9 opened projection option and it works
F10 I have no idea what it used to do, but it doesn't do anything now.
F11 put laptop to sleep now it toggles full screen.
F12 putts laptop in full screen mode, now it does nothing

I'm running Windows 10 on a Asus Rog Strix Scar. Does anyone know a way to re-assign my function keys? I've tried searching through This PC -> Manage and can't seem to find anything.

:)

 

New laptop FN keys not working [Solved]

Exactly what I was used to do, pressing the FN key with an F key but that didn't work....
If I press the FN key I get f1 f2 f3 and so on.

It was just the other way around, but I figured it out now.*Smile

 

New laptop FN keys not working [Solved]

The FN key seems to be a toggle , I don't need to press it every time I want to adjust the volume or brightness.
With all my previous laptops I needed to press the FN key WITH the f key I needed to use, so it works slightly different on this laptop than what I'm used to.

 

FN key always on

To clarify, I was saying "Accessibility" features maybe be controlled via the BIOS, not the Fn keys. And one of the Accessibility features makes the keys "sticky". This allows folks with some disabilities to press, for example, the Ctrl key, then the Alt key, and then Del in sequence instead of all at once. Same with the Fn key. The sticky feature would let you first press the Fn key, and then the F9 key (for example) and not Fn + F9 at the same time to enable/disable whatever Fn + F9 does with that notebook (it is the touchpad on my Toshiba).