How to connect sql server 2005??

Question

When Im Connect the sql server then it will show the

 

Can not connect to HOME-PC\SQLEXPRESS

 

Error shows that :

 

TITLE: Connect to Server

Cannot connect to HOME-PC\SQLEXPRESS.

ADDITIONAL INFORMATION:

The type initializer for 'System.Data.SqlClient.SqlConnection' threw an exception. (System.Data)

The type initializer for 'System.Data.SqlClient.SqlConnectionFactory' threw an exception. (System.Data)

The type initializer for 'System.Data.SqlClient.SqlPerformanceCounters' threw an exception. (System.Data)

Configuration system failed to initialize (System.Configuration

Unrecognized configuration section runtime. (C:\Program Files\Microsoft SQL Server\90\Tools\Binn\VSShell\Common7\IDE\ssmsee.exe.Config line 2) (System.Configuration)