SQL Server 2012 Installation Error

After Installaltion getting the error, though the SQL server is installed on windows 2008 R2 but Y i'm getting the error..

These are the logs...

08/28/2013 05:15:19.839 Saved .Net security policy file
08/28/2013 05:15:19.840 Attempting to release setup mutex
08/28/2013 05:15:19.842 Setup mutex has been released
08/28/2013 05:15:19.843 Setup closed with exit code: 0x84C40013
08/28/2013 05:15:19.845 ======================================================================