Opening powershell terminal from the script for the execution purpose

Question

# Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass  (Before running the script execute the command in terminal for admin rights)

# Step 1) install Chocolatey when needed
if (-not (Test-Path -Path "$env:ProgramData\Chocolatey\choco.exe" -PathType Leaf))
 {
   # from https://chocolatey.org/install
   Set-ExecutionPolicy Bypass -Scope Process -Force;
   [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;
   iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
}

$argList = "-file `"C:\Users\cdac\Desktop\Shravan\PowerShell_Scripts\Automation_working_code_bkup.ps1`""
Start powershell -argumentlist $argList -NoNewWindow 

# Step 2) define the array of packages you are offering
 $Packages = 'googlechrome',
             'firefox',
             'codeblocks', 
             'windbg',                        ##### newly added ####          
             'x64dbg.portable',               ##### newly added #### 
             'visualstudio2019community',     ##### newly added ####
             'nasm',
             'explorersuite',
             'pestudio',
             'vscode',
             'sysinternals',
             'python',                        ##### newly added ####
             'ccleaner',
             'anaconda3',
             'wireshark',
             'sublimetext3',  
             'notepadplusplus',
             'ida-free'
 
             

# Step 3) define the Show-Menu function
function Show-Menu 
{
    Clear-Host
    Write-Host "**********************************************"
    Write-Host "LIST OF SOFTWARES"
    # write the options using the array of packages
    for ($i = 0; $i -lt $Packages.Count; $i++)
    {
        # {0,10} means right align with spaces to max 10 characters
        Write-Host ('{0,10}. {1}' -f ($i + 1), $Packages[$i])
    }
    Write-Host " q. Exit the script"
    Write-Host "*************************************************"
    Write-Host
}

# Step 4) enter an endless loop you only exit if the user enters 'q'
while ($true) 
{
     Show-Menu
    $UserInput = Read-Host "Select the softwares number(s) to be installed (space separated)"
   
        # testing if the user wants to quit and if so, break the loop
        if ($UserInput -eq 'q') 
        {
            break
        }

         foreach($input in $UserInput.Split(' '))
         {
     
            # testing if the user entered a number between 1 and the total number of packages (inclusive)
            if ([int]::TryParse($input,[ref]$null) -and 1..$Packages.Count -contains [int]$input) 
            {
                # here you install the chosen package using the array index number (= user input number minus 1)
                $packageIndex = [int]$input - 1
                Write-Host "Installing $($Packages[$packageIndex])"
                Choco install $Packages[$packageIndex] -y --ignore-checksums
                 
            } 

             else 
             {
                $availableOptions = 1..$Packages.Count -join ','
                Write-Host "Error in selection, choose $availableOptions or q" -ForegroundColor Red
             }
         }

    $null = Read-Host "Press Enter to continue"
}

I have to execute the current script output in another powershell terminal. Another powershell terminal is opening but the terminal is blinking continuously. please tell me where the mistake in the script.