SPOILER ALERT

I searched on many forums for help but I could find anything that helped so I ask u for help. In the Quest "The Molecular Level" where u need to build that big machine to teleport into the institute there is a glitch where u cant power up the platform and so u cant complet the quest . I tryed to build that with every tactic in nearly every settlement and nothing work , has someone a solution for that , I really wanna continue playing the main story sadly this glitch get me stucked . Iam happy about every little help , thanks everyone

Which faction are you building it with?

Did you make sure that all the components share the same power grid?

The triangular platform thing and the huge tripod thing have to snap together for the machine to work. This is normally hard to do on any sort of built foundation, so I'd recommend doing it on the flatest ground you can find. Once snapped together, you can do the hold E (or whatever passes for it on consoel) thing to move the connected structure to a built foundation if you like. I had to learn this the hard way trying to build the thing inside a 3x3x3 building I made for it.

I know how the construction is supposed to be and how the power is supposed to be , but it wont work for me , I exactly builded it in all ways I can found in the forums. Because this fallout support cant even help or fix things in there own games

If you're truly convinced your construction method was spot on and the quest is bugged out, then the only options I see are load a saved game from before you started the quest or cheat quest completion with a console command (if on PC).