Microsoft has not made it easy to figure out how to build a PXE Server on Windows 2008 R2, Here’s how. Below are the steps to enable Windows Server 2008 R2 PXE/TFTP Server. First you will need the install the WDS Server Role. Make sure only the “Transport Server” Role service is checked. See images below.
Next, import attached Registry file which will point to the boot files and allow booting the PXE images. The important key in the registry file is “RootFolder”, this is the folder on your server that will hold all the boot images. Please ensure you edit as necessary. Once the registry is edited and imported you will need to reboot the server. Head over to part two of the series to see how to structure your PXE boot files.
Registry File Download