Cannot login SQL Server with 'sa'



Hi,
After I setup 'sa' password in SQL Server 2005, I get out SQL Server and
re-login using SQL Authentication mode with 'sa' and pasword, I get error:

"A connection was successfully established with the server, but then the
error occured during the login process. (Provider: Shared memeoryprovider,
error 0 - No process is on the other end of the pipe.) (Microsoft SQL Server
: error 233)"

Please help

Thanks

kai


.