title: A network-related or instance-specific error occured
body: <p>I have installed SQL Server 2008 R2 Developer edition successfully. I have 2 problems</p>
  
  <ol>
  <li><code>Its showing 2 (local) servers in server name</code></li>
  <li><code>A network-related or instance-specific error occured 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: Name Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 2)</code></li>
  </ol>
  
  <p><img src="https://i.stack.imgur.com/Xc5QL.png" alt="enter image description here"></p>