I believe the secure boot is causing the issue I disabled it in bios but dose not seem to be actually disabling it.
These are also blocking my linux usb boots such as gparted and linux mint

During Boot up it says
Checking media Presence
media present
starting pxe over IP4

then goes to next screen
downloading NBP
Succeed to Download file
and proceeds to boot as normal

We are running fog 1.2.0 with ubuntu 14.04 LTS
Unsure what you mean by installation details. i have searched through a few forums
but havent found much related to my situation.

Hi
I we have just purchased 90 new asus T200TA net books and having trouble with imaging over FOG
Any Help would be appreciative. We have gone into the bios and enabled the ip4 pxe boot and it trys to
boot but Stops and then goes right into hdd boot.

The Fog is running we have had successful imaging on other systems recently
we are running the newest version of fog with ubuntu 14.04

May Sound stupid but did you trying using

sudo stop tftpd-hpa
sudo start tftpd-hpa

in the terminal