ESXI vShphere 6.5 nvidia -smi returns : Failed to initialise NVML: Unknown Error

Trying to set up a Tesla M10 in a VMware Horizon 7 HCI VCI system.
Installed the vib file successfully
NVIDIA-VMware_ESXi_6.5_Host_Driver_390.42-1OEM.650.0.0.4598673

rebooted host etc as per nVidia installation instructions then ran:
nvidia -smi

This return : Failed to initialise NVML: Unknown Error

I am using Supermicro 1028U-TRT+

Any idea’s?

thanks.

http://nvidia.custhelp.com/app/answers/detail/a_id/4119/~/incorrect-bios-settings-on-a-server-when-used-with-a-hypervisor-can-cause-mmio