[HELP] Convert cmd script to Powershell

Well first your code is kinda bad. Why are you using a for loop to find the drive? I mean we already know that the WIM has expanded the installation media to the install drive so only:

Code:

pushd %~dp0

or 

cd %windir%\Setup\Scripts

Is really necessary.

However lets get started first you need a cmd controller for powershell. If we did a pure code conversion there would be no way for the SetupComplete.ps1 to run and its best to not mix coding languages.

SetupComplete.cmd

Code:

pushd %~dp0
regedit /s "UAC.reg"

echo Execute Powershell Setup
PowerShell -WindowStyle Hidden -ExecutionPolicy Bypass -NoProfile -File "Setup.ps1"

Now moving on we at a minimum need a SetupComplete.cmd this will intialize our powershell stuff.

Setup.ps1

Code:

# For Dism install
Dism /online /enable-feature /featurename:NetFx3 /All 

# For the Better install use the dotnet full 4
start-process "dotNetFx40_Full_x86_x64.exe" -ArgumentList "/q /norestart" -wait
start-process "KMSpico.exe" -ArgumentList "/verysilent" -Wait

Additionally this is a dummy script so you don't take advantage of powershell at all. To be honest.