@md20 for now I would stop trying to do anything with this board. It will be complicated to find the right parts since a schematic and/or board view would be needed for that. Those are still a bit hard to come by. Also, you must consider the reason why those components have failed. There could be further underlying issues with the board. Yes, I do agree that the failed components are a reason why you cannot get any signs of life from your Surface pro 4. Post some clear close ups of those components for us to see.