SCCM Server was failed respond to PXE services as per site status of SCCM 2007R2 . Log says “WDS Service need to start manually”
Verifying the server found WDS server is running however restart also not resolved the issue. checked the server event viewer
Log Name: Application
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
Running below command has resolved the issue.
wdsutil /initialize-server /REMINST:"D:\remoteinstall"
where D:\remoteinstall was the directory that Configuration Manager had configured WDS to use. Sure enough, as soon as I did that, PXE started working perfectly.