Ax2012 R3 Installation Error

Hi Friends,

While installing the Dynamics ax2012 R3 in Server 2008 R2. Microsoft Sql Server errors occurs the details of the error has been listed below.

Microsoft sql server(database)

Microsoft sql server is required in order to install the microsoft dynamics ax database

Install a supported version of Microsoft SQL Server and verify that you have access to the SQL Server instance.

Note: Setup connects to the SQL Server instance to obtain the SQL version number. If Setup is unable to connect, this prerequisite will fail. This failure typically occurs because the Windows service for the SQL Server instance is not running, or because the user running Setup does not have permission to query the database.

For information about the versions of Microsoft SQL Server that are supported with Microsoft Dynamics AX, go to…/

For information about how the prerequisite was validated, click the View log file link. For detailed troubleshooting steps, see the troubleshooting section of the Installation Guide at…/

Please give me a solution for this problem…

thanks in advance…