Start mining machine?

[raffa]

Gah, probably not - you don't even need to push, the plug automatically clicks into place if you get close enough. Maybe it's the wrong way round (I'm not sure if that makes any difference...) - have you tried using the other end? Or is it already plugged in?
Otherwise... you may need to load an old save

that's what i thought but i doesn't work that way
maybe u have a savegame in that room?