When I try to begin a new game, I cannot pass the first mission, "Unbound" when you escape from Helgen. The problem seems to be that some NPCs do not spawn, such as after finding the key in the keep, and come to the place where you need to find potions in the barrel, Hadvar just stands there as if he were waiting for me to get them. My mission objective pointer is way off, and he does not ask me to grab potions. When I choose to go with Ralof, no Imperials spawn where I am supposed to grab potions from the barrel. So he too just stands there waiting. This makes the game unplayable as I cannot even pass the first mission. If anyone can help, thanks a bunch. I can't seem to find help elsewhere.