# function to convert a secure string to a standard string
function ConvertTo-String {
    param(
        [System.Security.SecureString] $secureString
    )

    $marshal = [System.Runtime.InteropServices.Marshal]

    try {
        $intPtr = $marshal::SecureStringToBSTR($secureString)
        $string = $marshal::PtrToStringAuto($intPtr)
    }
    finally {
        if($intPtr) {
            $marshal::ZeroFreeBSTR($intPtr)
        }
    }
    $string
}

$clients = Get-Content -Path C:scriptsutilitieshostnames_online.txt
$adminUser = "Administrator"

# prompt for password and confirm
do {
    $ss1 = Read-Host "Enter new password" -AsSecureString
    $ss2 = Read-Host "Enter again to confirm" -AsSecureString

# compare strings - proceed if same - prompt again if different
    $ok = (ConvertTo-String $ss1) -ceq (ConvertTo-String $ss2)
    Write-Host "Passwords match"

    if(-not $ok) {
        Write-Host "Passwords do not match"
    }
}
until($ok)

# set password variable to string value
$adminPassword = ConvertTo-String $ss1

# setup job to reset password on each client
foreach($client in $clients) {
    $status = "OFFLINE"
    $isOnline = "OFFLINE"

    if((Test-Connection -ComputerName $client -Quiet -Count 1 -Delay 1) -eq $true) {
        $isOnline = "ONLINE"
    }

    # change the password
    try {
        $localAdminAccount = [adsi]"WinNT://$client/$adminuser,user"
        $localAdminAccount.SetPassword($adminPassword)
        $localAdminAccount.SetInfo()
        Write-Verbose "Password change completed successfully"
    }
    catch {
        $status = "FAILED"
        Write-Verbose "Failed to change password"
    }

    # create psobject with system info
    $obj = New-Object -TypeName PSObject -Property @{
        ComputerName = $client
        Online = $isOnline
        ChangeStatus = $status
    }

    $obj | Select computerName, Online, changeStatus | Out-File -FilePath C:test.txt -Append

    if($status -eq "FAILED" -or $isOnline -eq "OFFLINE") {
        $stream.writeline("$client -t $status")
    }
}

$adminPassword = " "

Write-Verbose "Complete"

Invoke-Item C:test.txt

# function to convert a secure string to a standard string
function ConvertTo-String {
    param(
        [System.Security.SecureString] $secureString
    )

    $marshal = [System.Runtime.InteropServices.Marshal]

    try {
        $intPtr = $marshal::SecureStringToBSTR($secureString)
        $string = $marshal::PtrToStringAuto($intPtr)
    }
    finally {
        if($intPtr) {
            $marshal::ZeroFreeBSTR($intPtr)
        }
    }
    $string
}

$clients = Get-Content -Path C:scriptsutilitieshostnames_online.txt
$adminUser = "Administrator"

# prompt for password and confirm
do {
    $ss1 = Read-Host "Enter new password" -AsSecureString
    $ss2 = Read-Host "Enter again to confirm" -AsSecureString

# compare strings - proceed if same - prompt again if different
    $ok = (ConvertTo-String $ss1) -ceq (ConvertTo-String $ss2)
    Write-Host "Passwords match"

    if(-not $ok) {
        Write-Host "Passwords do not match"
    }
}
until($ok)

# set password variable to string value
$adminPassword = ConvertTo-String $ss1

# setup job to reset password on each client
#-----------------------------------------------------------------------------------------
$scriptBlock = {
#-----------------------------------------------------------------------------------------
    foreach($client in $clients) {
        $status = "OFFLINE"
        $isOnline = "OFFLINE"

        if((Test-Connection -ComputerName $client -Quiet -Count 1 -Delay 1) -eq $true) {
            $isOnline = "ONLINE"
        }

        # change the password
        try {
            $localAdminAccount = [adsi]"WinNT://$client/$adminuser,user"
            $localAdminAccount.SetPassword($adminPassword)
            $localAdminAccount.SetInfo()
            Write-Verbose "Password change completed successfully"
        }
        catch {
            $status = "FAILED"
            Write-Verbose "Failed to change password"
        }

        # create psobject with system info
        $obj = New-Object -TypeName PSObject -Property @{
            ComputerName = $client
            Online = $isOnline
            ChangeStatus = $status
        }

        $obj | Select computerName, Online, changeStatus | Out-File -FilePath C:test.txt -Append

        if($status -eq "FAILED" -or $isOnline -eq "OFFLINE") {
            $stream.writeline("$client -t $status")
        }
    }
}
#-----------------------------------------------------------------------------------------
Get-Job | Remove-Job -Force

Start-Job $scriptBlock -ArgumentList $_ -Name AdminPWReset

Get-Job

While(Get-Job -State "Running") {
    Start-Sleep -m 10
}

Receive-Job -name AdminPWReset | Out-File C:test2.txt
#-----------------------------------------------------------------------------------------
$adminPassword = " "

Write-Verbose "Complete"

Invoke-Item C:test.txt
Invoke-Item C:test2.txt

$scriptBlock = {
    foreach ($client in $clients) {
        ...
    }
}

$scriptBlock = {
    foreach ($client in $using:clients) {
        ...
    }
}

$scriptBlock = {
    foreach ($client in $args[0]) {
        ...
    }
}

Start-Job -ScriptBlock $scriptBlock -ArgumentList $clients

Start-Job $scriptBlock -ArgumentList $_ -Name AdminPWReset

$scriptBlock = {
    Param($client)

    $status = "OFFLINE"
    $isOnline = "OFFLINE"

    if (Test-Connection -Computer $client -Quiet -Count 1 -Delay 1) {
        $isOnline = "ONLINE"
    }
    ...
}

foreach ($client in $clients) {
    Start-Job -Name AdminPWReset -ScriptBlock $scriptBlock -ArgumentList $client
}

while (Get-Job -State "Running") {
    Start-Sleep -Milliseconds 100
}

Receive-Job -Name AdminPWReset | Out-File C:test2.txt
Remove-Job -Name AdminPWReset