Disclaimer: I in no way own harry potter or Stargate. I'm not making any profit off of this either it's merely story that anybody is free to read.

Department of Mysteries 1995

Harry and had managed to escape from the Death Eaters after being forced to watch the execution of his friends at the hands of Lucius Malfoy in retribution for destroying prophecy after listening to it out of their hearing range in order to keep it from Voldemort. His world had shattered as he helplessly watched murders. Harry Potter has never been a violent person, keeping himself restrained at all times but at that moment his anger sky rocketed and he snapped.

Harry's magic erupted around him and he willed his magic to increase further and further until his body transformed partially into pure energy. Harry, deciding that it was enough sent out his energy/magic willing it to wipe the Death Eaters out of existance. Hs energy detected a link to another being on each of them and harry realized that it was their dark marks linking them to Voldemort. Using those links he sent his destuctive power through it and into Voldemort killing him in the process making him appear in the room searching blindly for the source. Harry then sent his power out to every Death Eater through their links with Voldemort killing them as well, before he left, willing himself to go somewhere faraway and safe from everyone and everything.

Harry's mind was subconsiously linking with a nearby device in the department of mysteries that the unspeakable had no idea what it was. The device was an Alterran Repository of Knowledge containing all the knowledge of the Alterran race from when they returned to Earth millenia ago.