Hello Community, I decided to try Odoo and installed the Community Edition. 

While creating the database I got the following message
How can I start or check if the server is running? 

Thanks in advance for your help
P.s.: I installed the Windows Version

Database creation error: connection to server at "localhost" (::1), port 5432 failed: Connection refused (0x0000274D/10061) Is the server running on that host and accepting TCP/IP connections? connection to server at "localhost" (xxx.x.x.x), port 5432 failed: Connection refused (0x0000274D/10061) Is the server running on that host and accepting TCP/IP connections?