I downloaded PostgreSQL from their site - http://www.postgresql.org/download/windows
However, I can\'t create a database from pgAdmin and get a mess
Your server running on port 5432 but in the properties, the port is set to 5433.
You must go to pgAdmin, click on database version, ex: PostgresSQL 10 and edit properties.
A new window appears and you need to change the port to 5432 [this is default port].