Technically, a sinus infection (sinusitis) is not an infection, but it refers to the inflammation or swelling of the tissues that line the sinuses. Such swelling or inflammation occurs when the sinuses get blocked and filled with fluid (mucus).
Master Investigators Box. The Master Investigators Box holds the keys (which are four rings, Katarina's Ring, Treoy's Ring, Balwen's Ring and Pithi's Ring) to the Daedric Relic. The chest is located on the wall to the North/West side of The Arcanaeum. The key to the chest is located in the Midden Dark on a table in the room with the Daedric Relic, on top of a book called Midden Incident Report. Once the rings are acquired they can then be placed on the Daedric Relic to release Velehk Sain.
Bring up the map and Fast Travel to the college of Winterhold. Find the Archmage, most likely in the Arch-Mage's quarters in the Hall of the Elements. Tell him you need to speak to him about Saarthal. Report your findings to him.sk Tolfdir what he wants you to do. He will ask you to assist one of his scholars, Ariel Gane, with his work cataloging and uncovering the ruins. Find Arniel Gane. Follow the tunnel with the lanterns, then down a ramp, and go through a bridge and another tunnel, to finally find Ariel Gane in a small room.