Calling a Batch File into a Powershell Script - powershell

Question

Everytime my Powershellscript is calling the Batchfile, a new Powershell Window opens. How can i modify the script in order to avoid the new window opens? I've tried with -windowstyle hidden and NoNewWindow, but nothing works.
Here is the Batchfile that starts my Powershell Script:
#echo off
set scriptFileName=%~n0
set scriptFolderPath=%~dp0
set powershellScriptFileName=test.ps1
powershell.exe -windowstyle hidden -Command "Start-Process powershell \"-ExecutionPolicy Bypass -NoProfile -NoExit -Command `\"cd \`\"C:\Temp\`\"; & \`\".\test.ps1\`\"`\"\" -Verb RunAs"
And here is my Powershell Script:
$Source = "C:\Program Files\Planmeca\Romexis\client\cephmodule\analyses"
$Destination = "\\PRENCIPE-THINK\PDATA\analyses" #<------ UNC PFAD FUER DEN SERVER ANPASSEN!!
New-Item -ItemType directory -Path $Destination -Force
Copy-Item -Path $Source\*.* -Destination $Destination -Force -Recurse
(ROBOCOPY $Source $Destination /MIR /W:30 /R:10)
# Ueberpruefe den Ordner auf veraenderungen
# Fuehre den Script aus bei Aenderung oder Umbennenung
$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = 'C:\Program Files\Planmeca\Romexis\client\cephmodule\analyses'
$watcher.IncludeSubdirectories = $true
$watcher.EnableRaisingEvents = $false
$watcher.NotifyFilter = [System.IO.NotifyFilters]::LastWrite -bor [System.IO.NotifyFilters]::FileName
while($TRUE){
$result = $watcher.WaitForChanged([System.IO.WatcherChangeTypes]::Changed -bor [System.IO.WatcherChangeTypes]::Renamed -bOr [System.IO.WatcherChangeTypes]::Created, 1000);
if($result.TimedOut){
continue;
}
write-host "Change in " + $result.Name
$A = Start-Process -WindowStyle Hidden -FilePath c:\temp\Bypass.bat -Wait -passthru ;$a.ExitCode
}

Answer 1

Try the '-NoNewWindow' switch. I'm running PS Version 5.1 on Windows 7 and it's available. If you're running an earlier iteration if WMF, you may want to update your machines to 5 or better.