Hi,
What is the motherboard's board number or the laptop's full model number perhaps?
It may be easier to purchase the [http://laptop-schematics.com/view/11997/|schematic] for the board to find out what's wrong.
Saves a lot of time and frustration
The link above is for a MACH-W19C (2018 model) but there are other models of Matebook X Pro e.g. MACHC-WAE9LP (2020 model) so finding the correct one is essential.
Just what I'd do.