Please check or do the follwowing steps.
Configure the SQL Server port binding.
• From the Start Menu, select, all programs> SQL Server 2008>SQL Server Configuration Manager
• Expand SQL Network Configuration >Protocols for SEP01 (where SEP01 is the name of the instance you created in the SQL setup).
• Ensure TCP/IP is enabled.
• Double-click on TCP/IP
• Select the IP address tab.
• Scroll all the way to the bottom and under IPAll, enter 1433 for TCP Port.
Please note that you must use TCP Port here as the SEPM cannot connect to the SQL Server using Dynamic ports.
• Click OK.
• You will need to restart then SQL Server Service.