Power won't start

@coffie When plugging the machine into a charger, do you see any orange/amber LEDs?
In my experience, if the machine is not charging the battery, and not powering with a known-good charger, there is most likely an issue with the motherboard.
If your machine is still under warranty, Lenovo is generally very good about honoring theirs. I would get in contact with them if possible.
Otherwise, you may find a guide on resetting the CMOS battery (if accessible) on your motherboard, to see if that restores any signs of life.