Remedy Entertainment's supernatural thriller Control offers players a mysterious environment filled with intriguing puzzles and mind-bending encounters. During the Fourth Main Mission, titled Old Boys' Club, Jesse Faden must reboot Dr. Darling's Hedron Resonance Amplifier (HRA) machine. This requires acquiring five scattered punch cards and inserting them into their corresponding terminals in the correct sequence.
Locating the Five Punch Cards
Before attempting to solve the terminal sequence, you must first gather all five punch cards placed around the HRA Lab. Four of these cards are positioned across the ground floor area on desks, white boxes, and equipment tables. The final card can be found on the upper floor, sitting on a window ledge near the fourth terminal.
Collecting all cards ensures you have every piece required to interact with the machines. Players can easily spot them by scanning desk surfaces and floor areas near the central research equipment. Once inventory is full, you can focus entirely on reading the environmental clues.
Deciphering the Whiteboard Clues
The key to understanding which punch card belongs to which terminal lies within three whiteboards scattered around the lab. Two whiteboards are located on the ground level, while the third is situated on the upper balcony. These boards display diagrams of the cards alongside numbers and arrows indicating necessary position swaps.
By comparing the diagrams, players can deduce the proper order through a quick process of elimination. Pay close attention to crossed-out symbols and directional arrows beneath the numbers, which alter the initial sequence. If you want to check out more gaming walkthroughs, feel free to visit for comprehensive updates.
The HRA Machine Terminal Solution
To successfully activate the system, head to each numbered terminal and insert the matching card pattern. Machine 1 receives the card featuring a mixed center cube paired with a back panel. Machine 2 requires the fully solid black center cube card.
Machine 3 takes the abstract yellow card that features a single black panel. Move upstairs to Machine 4 and insert the card showing two yellow center panels over a dark background. Finally, place the half-black pattern card into Machine 5 to complete the sequence.
Activating the Resonance Amplifier
Once all five cards are correctly aligned in their respective terminals, an audio cue will trigger in the lab. This confirms that the terminal network is fully restarted and ready for operational use. Walk back to the main HRA Machine on the raised platform and interact with it one last time.
Completing this objective advances the Old Boys' Club storyline, allowing Jesse Faden to proceed with her investigation into the Research Sector. Understanding the whiteboard diagrams saves considerable time and prevents unnecessary trial and error. With the machine running, you can move forward to meet your next objective in the Oldest House.
