options that can assist in prolonging your Steam Deck’s battery life; it is not surprising that there are multiple methods to access the power menu. As an alternative, while on most Steam-related screens and with no games running, tap the Steam Menu in the bottom bar using the touchscreen. This action will bring up the system menu, allowing you to navigate to the power options and select Restart.
If a controller is connected to the Steam Deck, such as when docked or when it is upright and paired with a wireless controller, you can hit the middle button on your gamepad to access the menu. For a PlayStation controller, this would be the PlayStation button, whereas on an Xbox controller, it’s the Xbox media button. Many generic or third-party controllers feature a similar button, as well.
