Despite how impossible it seemed, Harry was sure his dad had saved the three of them from the dementors. After Hermione's time turner took them both back three hours, he was desperate to discover if who he'd seen casting that patronus was truly his dad. Harry certainly wasn't disappointed when his mum turned up instead, and changed the entire course of his life. Harry/Hermione

Just Suppose Harry hadn't heeded his godfather's advice, and actually lost his temper at his trial? Time travel fic and title is 'Back to the Future' joke.

What will happen when a goblin-raised Harry arrives at Hogwarts. A Harry who has received training, already knows the prophecy and has no scar. With the backing of the goblin nation and Hogwarts herself. Complete.