Supermicro X10DAi with Nvidia Grid K1

[andyhaughton]

So I am having major problems getting this to work

Discrete Device Assignment with Windows 2016 Hyper-V

My setup is as follows

Motherboard: Supermicro X10DAi (SR-IOV enabled)
Processor: Intel Xeon E2650-V3
Memory: 128GB DDR4
GPU: Nvidia Grid K1

When I try to dismount the card from the host I get the following:
Dismount-VmHostAssignableDevice : The operation failed.
The current configuration does not allow for OS control of the PCI Express bus. Please check your
BIOS or UEFI settings.
At line:1 char:1
+ Dismount-VmHostAssignableDevice -force -locationpath $locationpath
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: ) [Dismount-VMHostAssignableDevice], Virtualizat
ionException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.DismountVMHos
tAssignableDevice