I am trying to load the Dell PowerShell BIOS Provider within Windows PE v 5.0, MDT 2013 in order to switch the Boot List option to UEFI Mode and disable the Legacy Boot ROM option.

When attempting to run "import-module" to load the DellSMBios provider, I get the following error:

Import-Module : Could not load file or assembly 'file:///xxxxxxxxxxxx\DellBIOSProvider.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515).

I verified that I am using the correct x64 bit version, matching the 64 bit version of PE that I am booting. I also have the PowerShell and .NET features added into PE.

I have also tested using the BIOS provider in a regular Windows session and it works without issue.

Are there any other dependencies that I need to load in order for this to work?