Yes it was the issue with the service account . Fixed it . Thank you all for the help.

Sql Server event log added below

Date,Source,Severity,Message

10/03/2013 12:26:58,,Information,[098] SQLServerAgent terminated (normally)

10/03/2013 12:26:58,,Information,[000] Configuration option 'show advanced options' changed from 0 to 1. Run the RECONFIGURE statement to install. [SQLSTATE 01000] (Message...