Use the staff on the big orb in the middle of the room, it took like half my staffs charges to get him to come active. it doesn't look like it's working at first but keep at it. Also make sure the beam is hitting the orb not just your targeting reticule.
I've used
all of the Staff's charge on the Eye, and still does not work. I don't believe it will unless the fight is initiated. Nothing happens, at all, when I enter the room. Not events triggered or anything.
I need to know how to reset the quest or Tolfdir, as I believe he may be the bug.
What I don't understand is how these bugs even occur... I've not delved into games programming but surely a simple if should trigger the event, obviously there are too many conditions which lie within the quest and outside of it. For example, Tolfdir/the Staff.