when i try to start sql server agent appear error message(the request failed or the service did not respond in a timely fashion)and appear process id=0 so please i want help
and thanks

hi
this detail for error:

2008-02-11 03:48:07 - ! [298] SQLServer Error: 233, Shared Memory Provider: No process is on the other end of the pipe. [SQLSTATE 08S01]
2008-02-11 03:48:07 - ! [298] SQLServer Error: 233, Communication link failure [SQLSTATE 08S01]
2008-02-11 03:48:07 - ! [165] ODBC Error: 0, An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. [SQLSTATE 08001]
2008-02-11 03:48:07 - ! [000] Unable to connect to server 'AHMED\SQLEXPRESS'; SQLServerAgent cannot start
2008-02-11 03:48:07 - ! [298] SQLServer Error: 233, Shared Memory Provider: No process is on the other end of the pipe. [SQLSTATE 08S01]
2008-02-11 03:48:07 - ! [298] SQLServer Error: 233, Communication link failure [SQLSTATE 08S01]
2008-02-11 03:48:07 - ! [165] ODBC Error: 0, An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. [SQLSTATE 08001]
2008-02-11 03:48:07 - ! [382] Logon to server 'AHMED\SQLEXPRESS' failed (DisableAgentXPs)
2008-02-11 03:48:07 - ? [098] SQLServerAgent terminated (normally)


thanks