Vault 75 (quest)

Vault 75 is a side quest in Fallout 4 which is triggered when exploring Malden Middle School.

Quick walkthrough

 * 1) Head to the basement of Malden Middle School.
 * 2) Open the elevator.
 * 3) Find the lab access card on the Gunner Commander in the combat training area diner.
 * 4) In the Lab overlooking the combat training, find another Gunner with the admin access card.
 * 5) Make your way to the Admin Area and read the overseer's terminal to complete the quest.

Bugs

 * This quest may not be activated upon discovering Vault 75, or examining the swipe card access lock. There is no way to fix this besides either using console to give yourself the key cards or take advantage of console commands to get to the bobblehead.
 * If the quest gets stuck you can use the console command to fix it using a stage ID.