So, if gaming mode is enabled, your Windows button won’t work. As you already know, the Windows button on our keyboards is notorious for that, and along with a few others, often targeted by the gaming mode features restrictions. Gaming mode means disabling buttons that you may accidentally click during intense gameplay, which can minimize your game and disrupt your experience.
For example, Logitech or Razer keyboards are very popular, and both brands feature a dedicated button on their products that toggles gaming mode on and off. If you use your PC for gaming, chances are you have at least one peripheral manufactured by a gaming-oriented brand.