bloodonthetracks

So I recently installed Dawnguard, but I only get as far to the load screen before the game crashes. I've googled around quite a bit and tried most solutions. I've checked the plugin file in the AppData/Local/Skyrim map, the loading order (it's Skyrim>Update>Dawnguard, and no mods installed), and I've tried downloading the unofficial patch for it, but nothing works. All answers are appreciated.