>>>Hi,
>>>
>>>I downloaded and installed SQL Server 2008 R2 Express on the computer which didn't have any other version of SQL Server. The installation went through without errors. Now when I start SSMS the Window Connect to Server shows the server name as (local). And Authentication is Windows. When I click on Connect I get error.
>>>

>>>A network-related or instance specific error occurred while establishing a connection.  The serve was not found or was not accessible... 
>>>

>>>When I click on the pull-down list of the Server name and then on click on "Browse for more" no server names appear.
>>>What step do I need to make the server accessible?
>>>TIA.
>>
>>Run SQL Browser.
>>Are you sure you added current user as administrator when you installed SQL Server?
>>Are Service run?
>
>How do you Run SQL Browser?
>Which Service should run?

Look for SQL Server Browser service - start it and and set it to Automatic Startup.