Ping Bulk of computers

Hi Guys,

I made this query for getting computers are available and not available:

#Set-ExecutionPolicy remotesigned -Force


$Server = Get-Content C:\users\xxx\Documents\AllServers.txt
ForEach

($Ping in $Server)

{

 if (
Test-Connection $Ping  -Count 1 -ErrorAction SilentlyContinue) {Write-Host $Ping "is running" -f "white"} else 
{Write-Host $Ping "server is down"  -f "Red"}

}


 

The problem is that result is "Server is Down" even if it is not down..

the Notepad contains all server on my OU,

If I reduce  servers to 10-5 it working.

Can someone assist?

My Website:www.Pelegit.co.il Mcitp /Mcsa 2012