Honestly I think you dodged a bullet there. That projector dying probably forced you to actually connect with the room instead of hiding behind slides. People remember a presenter who rolls with the punches way more than some slick deck. Plus everyone in that room has seen a million cookie cutter PowerPoints that put them to sleep. Your laptop screen bit probably made you look more real and human than any perfect presentation would have. Tech failing is a gift in disguise if you ask me.