In this guide, you will learn how to investigate the Goblin Presence while playing Hogwarts Legacy. This objective is given during the first Percival Rackham trial.
How to Investigate the Goblin Presence in Hogwarts Legacy

Ensure your character is level 11 in order to start the first Percival Rackham trial. The quest has you visiting a designated location that he will show on the map in the Map Chamber. The location is known as San Bakar’s Tower, found towards the north of the map beyond the Forbidden Forest.

Once you arrive there and meet with Professor Fig, you will need to eliminate all the goblins in the area. Fortunately, this will also teach you how to use Petrificus Totalus in case you haven’t already been using it. It is advised that you use Petrificus Totalus on as many goblins as you can. This will make it easy to clear the area.
After you have successfully cleared the area of goblins, head over to the tent that is near the edge of the cliff. Inside this tent, you will find a note. Collect the note which is kept on a table. This completes the objective.
Hogwarts Legacy is an action role-playing game developed by Avalanche Software and initially released in 2023 for PC, PlayStation 5, Xbox Series X|S, Nintendo Switch, PlayStation 4, and Xbox One.