Once the Server 2012 has been built and had its name and IP address set, I am also making the assumption that your network has a DHCP and DNS Server, you can begin the process of installing WDS. In the Server Manager console, select Manage and Add Roles and Features .
Select the Installation Type, in my case Role-based and click Next .
Select the Server or Hard Disk you want to install the role to and click Next .
Select Windows Deployment Services and then Add Features of the dialog box that appears, then click Next
Select the .NET Framework 3.5 features and click Next
Click Next to acknowledge the things to note and Next again confirming the roles of deployment and transport.
On the confirmation page click the Specify an alternative source path and enter the path to the server 2012 disk probably D:\sources\sxs\ and click OK then click Install .
When the installer completes click Close