6. Click New Query in SQL Server Management Studio and type select @@servername to verify everything is correct and you have successfully changed the sql server name.

Now, enter your SQL Server's name and choose the authentication type that you want to use. If necessary, enter the credentials to be used for SQL Server authentication.

You create a data source name (DSN) to save database setup information, so you can open a connection to the SQL Server database without re-entering the server information.