Can't use F1-F12 buttons in-game

[StormKitsune]

I'm using a surface pro 3, and when I try and use, say the F3 button, during a game, instead of using that shortcut in-game it mutes my laptop. This could simply be how the laptop always works, but I figured I'd ask and see.

 

[gardenman]

Hi, a quote from the following page (below):

Lock keys into function mode

If you’re using an app that uses function keys a lot, you can lock the top row of keys temporarily so the function keys stick.

When the function keys are locked, pressing a key on the top row gives you the function key (like F3 instead of Mute key). Pressing Fn plus the key gives you the special key. For example, to mute the speaker, press Fn+ Mute key.

To lock and unlock the Fn keys:

Type Cover, Type Cover 2, and Type Cover for Surface Pro 3
Hold down the Fn key and press the Caps key to lock the function keys. Press Fn+Caps again to unlock them.
Surface 3 Type Cover, Type Cover for Surface Pro 4, and Surface Pro Signature Type Cover
Press the Fn key to lock the function keys. Press the Fn key again to unlock them.
A light appears on the Fn key when you’ve locked the keys into function mode.

I found the above information on the following page:
https://www.microsoft.com/surface/en-us/support/hardware-and-drivers/type-cover

I hope this helps.