Bought 2010 Renault trafic sport a few months ago, problem- radio works, cd works and plays, screen was black with egg timer showing, no SD card, bought new SD card from Renault with maps etc on it (supposedly) , inserted card, screen turned green with egg timer still on it, this is how it’s stayed even with engine off, van locked etc, can anyone help ?? Ps I’m not really tech savvy so go easy on me lol