Conexión al local host del servidor

Hola gente, tengo un problema al conectarme al host para acceder a la
base de datos...me sale el sgte error:

could not connect to server: Connection refused(0x0000274D/10061) Is the
server running on host
"127.0.0.1" and accepeting TCP/IP connections on port 5432?

El lugar donde van los rangos de IP en el pg_hba.conf lo tengo de la
sgte manera

# Put your actual configuration here
# ----------------------------------
#
# If you want to allow non-local connections, you need to add more
# "host" records. In that case you will also need to make PostgreSQL
listen
# on a non-local interface via the listen_addresses configuration
parameter,
# or via the -i or -h command line switches.
#

# TYPE DATABASE USER CIDR-ADDRESS
Roberto dice:
#IPv4 local connections:
host all all 127.0.0.1/32 md5
host all all 192.168.1.0/24 md5

Roberto dice:
# IPv6 local connections:
#host all all ::1/128 md5

POR FAVOR, q alguien me diga q puedo hacer para solucionar este
problema.