PowerOn Mechanism_Lenovo Legion

I had the problem that I can't start my laptop when it's in the wall mount. It is always closed.
So I have tried a lot and have now found this mechanism.

Please note: 
-cover parts of the laptop with tape to protect them
-the magnet under the display must be removed (this may invalidate your warranty)

Now all I have to do is turn the knob and the laptop starts up.