PowerEdge R6415 Install of Hyper-V 2016 Server Freezes

When installing the non-gui Hyper-V Server 2016 on a new server I never get farther that the Windows Logo. After the "Loading files ..." progress bar it just freezes, not spinning circle of dots or other signs of activity.

Here's what I've tried:
* Updating all Firmware / Drivers
* Bios
* Chipset
* RAID Controller
* iDRAC
* Drivers for OS Deployment
* Install using Lifecycle Controller OS Deployment (via browser)
* with and without Secure Boot
* with and without selecting Server 2016 to add drivers during the install
* Install from a bootable USB stick with the Hyper-V Server 2016 Iso
* tried front and back ports
* activated Generic USB in the Bios
* downloaded and recreated the USB stick a couple of times
* Let the install run overnight to see if it was just hanging for a very long time

To see if I was completely off course I tried installing Hyper-V Server 2012r2 and it worked on the first try using the Lifecycle Controller and selecting Server 2012 for the drivers

Any insight to what I may have done wrong or am overlooking? Any details I need to provide to understand the problem better?

Thanks in advance.