Powershell Problem IF Statement

# Create an object for each computer with the client's online status.  
$Output += New-Object -TypeName PSObject -Property @{
"ComputerName" = $_.Name;  
"Status" = Test-Connection -ComputerName $_.Name -Quiet -Count 1  
}

# Dynamic array to hold the output.
$Output = @()

# grab a list of computers from AD.
$ComputerList = Get-ADComputer -Filter *

# Count the number of computers for the Write-Progress Cmdlet.
$Count = $ComputerList |
Measure-Object |
Select-Object -ExpandProperty Count

# Control variable
$I = 0


$ComputerList |
ForEach-Object {
#Incriment the control variable
$I++

# Calculate percent completed
$PC = ($I/$Count)*100

# Display progress bar.
Write-Progress -Activity "Connectivity Test: $_.Name" -Status "$PC% Complete" -PercentComplete $PC  

# Create an object for each computer with the client's online status. 
$Output += New-Object -TypeName PSObject -Property @{
"ComputerName" = $_.Name;  
"Status" = Test-Connection -ComputerName $_.Name -Quiet -Count 1  
}

}
# Convert the output to HTML
$MailOutput = $Output | ConvertTo-HTML -Fragment | Out-String

# Send the email.
Send-MailMessage -to "Administrator@TechTour.com" -From "Allofus@HP.com" -Subject "Connectivity Test" -BodyAsHtml -building $MailOutput -SmtpServer Tech-EX1