$Start_Time = Get-Date -Format T

$logFile = ‘Not_Reachable_PCs.txt’

$Message = Read-Host -Prompt “Type Your Message Here”

$ComputerName = Read-Host -Prompt “Type Computer Name Here”

$Time = Read-Host -Prompt “Type Time Here”

$Session = “*”

$ComputerName = $ComputerName -split ‘,’

if ($ComputerName -match “:”)

                  {

                  $Path = $ComputerName

                  $ComputerName = Get-Content $path

      }

                  $Total = $ComputerName.count 

                            foreach ($Computer in $ComputerName )

                                            {

                                                            if (Test-Connection -ComputerName $Computer -Count 1 -ErrorAction 0)

                            {

                                                            Write-Host “Sending Message to $Computer…….” -ForegroundColor yellow

                            msg $Session /Server:$Computer /Time:$Time $Message

                                                            Write-Host “Message Successfully Sent to $Computer” -ForegroundColor Green

                                                            }

                                                            else

                                                                            {

                                                            Out-File -FilePath $logFile -InputObject $Computer -Append -Force

                                                                                            Write-Host “$Computer is not Reachable…” -ForegroundColor red

                                                                            }

                                            }

                            $Not_Reachable_Count  = @(Get-Content $logFile).count

    $End_Time   =    Get-Date -Format T

    $Minute = (New-TimeSpan -Start $Start_Time -End $End_Time).Minutes

    $Second = (New-TimeSpan -Start $Start_Time -End $End_Time).Seconds

                            Write-Host Start at $Start_Time, End At $End_Time, Took About $Minute Minutes $seconds Seconds

                            Write-Host “Total $Total Computer Processed, $Not_Reachable_Count computers were offline. The list is stored in $logFile” -ForegroundColor white