We initally got 26 Surface Pro 3's in our first batch for our company. So what I did was fully install all our apps and updates on the first SP3 and then I used the "System Image Backup" feature in the Windows 8.1 File History and saved an image of my machine of a exnternal hard drive. So then on every other SP3, I applied that image using System Image Recovery from a external Windows 8.1 Windows 8.1 Recovery Environment. Worked perfectly for first batch of SP3's. We orderd 12 more (same hardware specs), and I tried to apply the same image twice and it failed. Now whenever I boot up the first SP3 from this second batch, it always goes to the black UEFI screen, I cant get it to boot into windows, I cant get it to boot off the Windows 8.1 CD (external dvd player) Need assistance please, thanks.