I'm playing Skyrim, and I'm doing a questvfor one of the vampire from the castle. He told me to get an ancient remain from Yngol Barrow, when I get there, I defeat all the enemies and stuff and get to the final room, I try to open the chest and it says "This chest seems to be sealed with some kind of magic". There's a button in the room but it doesn't work. If anyone could help me out on how to open the chest, I'd be eternally grateful.