A network-related or instance-specific error occurred while establishing a connection to SQL Server

After install SQL server 2008 in my machine I try to connect sql server using my machine IP Address in that time I got error 

                                                                                                    

TITLE: Connect to Server

Cannot connect to xxx.xxx.xxx.xxx

ADDITIONAL INFORMATION:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 5)

Now I will explain How to solve the error by step by step

Step 1

            Click start-> All Program->Microsoft SQL Server 2008->Configuration Tools->click on SQL Server Configuration Manager

 Expand SQL Server Network Configuration Double click Protocols for SQLEXPRESS and Right click on t TCP/IP and select Enable

It will ask you to restart SQl server

Already I will explain How to restart the SQL server in following post