Task Sequence - Moving computer to new OU

Question

I have a SCCM 2012 SP1 Cumulative Update 3 environment and I am trying to build a step into my Win7 x64 task sequence that will query registry keys to get username and workstation type (laptop vs. desktop).
The user information is obtained at the beginning of the process, put into n TS variable, and written to the registry. After the OS, drivers, and basic software is installed, I would restart into OS and would like to query the registry, move the computer
OU based off user's domain id location, and rename computer via a powershell script.
I have the following steps built into the task sequence.
1. Install .Net Framework 4.5
2. Install WMF 4.0
3. Enable RSAT and Import AD Module
4. Move and Rename Computer
I am running into issues with the powershell script that runs on step 4. The script is running with an ID account that has privileges to query AD and move computers. All steps (1-4) run without any issues if I target the computer that already has an
OS installed.
Here is the command that I am running in the step 4: 
powershell.exe -ExecutionPolicy Bypass -File SHI_Computer-New.ps1
It fails on the first line that queries the registry with an error that states “Get-ITemProperty is not recognized as a cmdlet, function, operable program, or script file.
$Name = (Get-ItemProperty -Path HKLM:\SYSTEM\Setup\SCCMOSD -Name User).User
Has anyone seen this type of issue?
If I hit F8 and run the script as local system from the Packages folder that contains the script I can run the script without any issues.
Any feedback is greatly appreciated!

Answer 1

I decided I would take the Get-ItemProperty out of the mix and use the task sequence variables in the command line, but still encounter the same issue.
Here is the command line that I am now using:
powershell.exe -ExecutionPolicy Bypass -File SHI_Computer.ps1 -Name %USER% -Desktop %ISLAPTOP%
It is able to resolve my arguments without any issue, but now errors on the Get-AdUser logic.
param(
  [string]$Name,
  [string]$Desktop
$Name
$Desktop
$UserID = Get-AdUser $Name | FT SamAccountName
Here is the error:
GetAdUser: The term 'Get-AdUser' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
Am I missing something in my powershell script or is this not possible in a task sequence?
Is anyone else using the Active Directory module in a task sequence?