I am in an enterprise environment and when we image Dell systems we boot to PXE one time for our deployment system (Altiris). I am only selecting a one time boot option to go to IPV4. After the image it reboots and tries to go the the HTTP boot. Going back into the BIOS I have to move the Windows boot manager to the top of the list for my deployment job to finish. This seems to be happening on all Dell systems, laptops and desktops, some brand new some 5+ years old. It does not happen on HPs. Am I missing some weird BIOS setting?