BUG #14976: Connect to server

The following bug has been logged on the website:

Bug reference:      14976
Logged by:          Mary Shevlin
Email address:      meadow117@gmail.com
PostgreSQL version: 10.1
Operating system:   Windows 10 Home 64 bit
Description:

could not connect to server: Connection refused (0x0000274D/10061) is the
server running on host "localhost" (::1) and accepting TCP/IP connections on
port 5432? could not connect to server: Connection refused
(0x0000274D/10061) is the server running on host "localhost" (127.0.0.1) and
acepting TCP/IP connections on port 5432?

ENTERING PASSWORD DOES NOT WORK. I am absolutely using the correct password,
there is no doubt I am entering the password used at setup. This has
happened three times - each time I have had to uninstall and reinstall.