Here's the deal: I have the problem with the key. On the first time, I didn't get the key. I didn't know it was a problem so I saved the game and went away. Later on, I restored the game and it crashed when I entered the room with the three robots. Then I found the savegame's fixer. I patched my file and I could enter the room, the thing is that when I do, the characters enter in combat mode and I can't open the gate using both keys. I can't leave either because HH won't follow me. And also I can't fight the robots because the game makes the computer to reboot.

WHAT can I do???!

There's another button on the fix named "Central Hall Swap".

Use it to get back to the Surveillance Room.

Thanks, I've tried it but it doesn't work. When I get to the Central Hall the problem appears again: the robots come down, I fight them and my PC reboots.