First you will need to find the reset button. Unplug any power and video source from the camera first. Look at the back of the camera and there should be a reset button. Hold down the button, with the power still disconnected. While still holding the button down, plug power into the camera and continue to hold the button for 30 seconds. After 30 seconds from the power being plugged in, release the reset button and the camera should reboot and be set back to factory defaults.