Sometimes PS3 consoles, when connected with a HDMI cable to the TV to play video games, display a message saying "mode not supported". In order to rectify the connection you need to connect the right set of cables. While initializing your PS3, locate the power button of the Playstation, and hold it for a few seconds. The ogames console resets the video options and recognizes hardware devices and cable connections. Playstation adjusts to the correct resolutions suiting the TV. Press (X) to authenticate the settings.