OK, here's and attempt at a set of install instructions for
  Windows 10 Professional Ver 10.0 Build 14393
  Cygwin DLL version: 2.9.0-3
  Postgresql: 9.6.5-2

I got slightly muddled with the cygserver and postgress
install-as-service steps, so the attached may not quite be right in that
regard, I won't be in a position to do another clean install until next
week to confirm, so happy to hear from someone else who can do so
sooner...

Maintainer: Please note what I believe to be a bug in the current
release which is described/fixed in the second step below.

ht