For many years I have had recurring memories of a film/episode of something about a computer that takes over a woman. I think it was from the 80's or 90's.
What I remember is:
A team of people enter an old bunker of some sort, discovering some kind of old dusty lair. In a central chamber they find a chair which is seemingly also a computer. The woman sits in the chair and the bunker powers up. She is immediately possessed. As the people try to communicate with her, she always refers to herself in the third person, by the name of the computer.
I also remember that the entire chair, woman and all, is connected to some sort of platform that will elevate after some time, and the people are trying to prevent this.
Some men dressed in suits, though not men in black, show up as well and try to reason with the computer. I have a vague recollection that this is the computer's doing, as these people were dead, and the computer is controlling time.
She/the computer starts to elevate towards the surface, cogs lifting her upwards, as the reasoning failed.