SQL Server 2008 R2 Unable to Conect

My error message reads:  Cannot connect to (local).  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 Serer is configured to allow remote connections.  (provider:  Named Pipes Provider, error: 40 -  Could not open a connection to SQL Server) (Microsoft SQL Server, Error  2).  I am not accessing remotely.  This is all on my machine and I am trying to access through Microsoft SQL Server Management Studio.  It has worked fine for over a year and all of a sudden....