I just made an image for an HP Elitedesk 800 G1 Ultra-Slim desktop, same process I've always done creating an image and using the new WIN 3.0 package I was given last week by Symantec Support because of the Intel I217 NIC, which worked on a similar model, the Mini Version of this PC by HP, but after image of this model, the Ultra Slim, we are getting "GPT-formatted disk. Legacy Boot not supported. Press any key to reboot".
I've tried disabling the UEFI and made sure legacy was on, and also tried to change from AHSI to IDE, because in the past we had issues with HP machines needing that changed to boot correctly.
What could be causing this on this model of PC, but the same line of PC, the Elitedesk 800 G1 Mini, I created image, same process I have always done by deleting all partitions and installing windows 64 bit SP1 and then sysprepped, and loaded image on 18 of those Mini PC's and no issue.
Any help would be greatly appreciated as we have 90 PC's to install soon and stuck...
Thanks!