This Script will initiated the Hardware inventory on multiple machines after getting ping request as True.

[System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null

$OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog

$OpenFileDialog.initialDirectory = $initialDirectory

$OpenFileDialog.filter = "txt (*.txt)| *.txt"

$OpenFileDialog.ShowDialog() | Out-Null

$getcomputers=get-content $OpenFileDialog.filename

$ErrorActionPreference = "Continue"

Function Policy($comp) {

try {

    $ScheduleID = "{00000000-0000-0000-0000-000000000001}"

    $SmsClient = [wmiclass]"\\$comp\root\ccm:SMS_Client"

    $SmsClient.TriggerSchedule($ScheduleID)   }

catch {

    $erroractionpreference = 'SilentlyContinue'

    write-host "Caught an exception:" -ForegroundColor blue

    write-host "Exception Type: $($_.Exception.GetType().FullName)" -ForegroundColor black

    write-host "Exception Message: $($_.Exception.Message)" -ForegroundColor Red

continue

}

}

function Ping-computer ($computer) {

    trap {$false; continue}

    $timeout = 1000

    $object = New-Object system.Net.NetworkInformation.Ping

    $ping_status= (($object.Send($computer, $timeout)).Status -eq 'Success')

    if ($ping_status -eq $true)

    {

        policy $computer

     }

    else

    {

     write-host "$computer is offline"

    }  

}

foreach ($computer in $getcomputers)

{

    Ping-computer $computer

}

Posted in Github as well