Well, it appears that I did not find all the correct tweaks in the BIOS on this laptop to get it to boot and install legacy formatted. Using the clue that Ubuntu installed UEFI I found how to create a UEFI  Windows 10 install and set everything back to UEFI in BIOS except Secure Boot (which I'll turn on next) and I now have Windows 10 ver 1709 up and running.
We have an Inspiron 7586 2-in-1. the hard drive failed and I installed a 160GB Intel SSD with a sysprepped image on it that we use for most laptop and desktop installs. I reset the bios to load legacy hardware as usual and for the first time the image fails to boot and I get the an error saying the drive needs to be repaired.  I image a second SSD, this time a Samsung 120GB - same result, I get the windows with the circle of balls going around, I even do a reboot that's when the error stating I need to repair the drive appears. I try to boot the laptop from a windows 10 install flash drive to repair the OS install and it blue screens with an error : Memory Management. I swap out the memory module for a known good one and try the flash drive boot again - same error. I attach an external DVD/RW and put my windows 10 install DVD in it  - same error. I take the drive out of a Latitude E5540 and clone it, but the clone will not boot until I run BOOTREC /Rebuildbcd, but again I cannot get the install DVD or Flash drive to not blue screen. Since the original drive is toast, I cant seem to find a way to boot this laptop, neither the set-up image nor the install dvd/flash drive will boot. Any ideas? I did successfully install Ubuntu 16.04 LTS FWIW, but I need Windows 10 on this Laptop.
Inspiron 7586 will not boot from Windows 10 flash drive or DVD