Is this box different that the other ones?
This is a blank VMware VM like the previous ones
May be stupid question.
Have use the same image for provisioning or its newly created image ?
I am little doubtful about the winpe image you are using .Create a new winpe image file and try to provision.
check bootmgr.exe file size. If it's a win2k8 server you are provisioning then bootmgr size should be 409 kb.
You can also check the pxe log.
it looks like the winpe image is missing drivers for your hardware - either storage or nic.
in the config for this VM what is the OS type set to ?
Yes there were some network driver related stuff that was missing. Thanks again !!