You may want to factory reset your GoPro Camera if you are experiencing a problem and want to make sure the camera settings are not contributing to the issue. You may also want to perform a factory reset if you are experiencing lag time when changing settings or are having HDMI connectivity issues.
This resets camera defaults, date/time, and camera username/password. It also unregisters the device from your GoPro Plus account.
2. GoPro Fusion: Factory Reset
​Press the Mode button (side) to power on your camera.
Press the Mode button repeatedly until the Settings icon (wrench) appears; press the Shutter button (front) to enter Settings.
Press the Shutter button five times until you reach Preferences settings.
Press the Mode button repeatedly, until RESET is highlighted at the bottom of the list, then press the Shutter button to select.
Press the Mode button to highlight RESET, then press the Shutter button to confirm and restore the camera to Factory Settings.