I am running ZCM 10.3. I have been imaging Dell optiplex 760 without any issues. I have found some that will not image. These machines are only a year old and have not been imaged with ZCM yet. I just switched from Zen 7 last summer. Most of my 760 imaged without any issue, but some will not. They are failing during the "Sending DHCP request to eth0" section of PXE. I updated the BIOS on these machines from A02 to A07 and it fixed the problem but there are still some that fail? If I remove the HD and put it in a working machine and image it, it works fine. Any Ideas?