Hi, I had installed OpenERP 7.0 and it was working fine till today. But today when I open the login screen it's showing an error that its not able to connect to the Server. I'm unable to login. Please give me any inputs if you are aware of this issue. Below is the error i'm getting

OperationalError: 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 accepting TCP/IP connections on port 5432?