Game mode disables the Windows key. This is to make sure that if you accidentally hit this key, you are not taken out of your game and back into Windows. To enable or disable game mode, press the FN + F12. There is a game mode light in the upper right corner to indicate if it is on or off. This takes the place of the scroll lock light indicator.

You can perform a factory reset of you keyboard by pressing and holding FN + ESC until the keyboard backlight flashes once.