$out = New-Object PSObject

           

Try {           

    $OSInfo = Get-WmiObject -class Win32_OperatingSystem -ErrorAction Stop 

    $out | Add-Member -MemberType NoteProperty -Name Computername    -Value $env:COMPUTERNAME   

    $out | Add-Member -MemberType NoteProperty -Name OSArchitecture  -Value $OSInfo.OSArchitecture

    $out | Add-Member -MemberType NoteProperty -Name Operatingsystem -Value $OSInfo.Caption

    $out | Add-Member -MemberType NoteProperty -Name SerialNumber    -Value $OSInfo.SerialNumber

    $out | Add-Member -MemberType NoteProperty -Name OSVersion       -Value $OSInfo.Version

   

    If ($OSInfo.OSArchitecture -eq '64-bit') {

        $RegValue = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name DigitalProductId4).DigitalProductID4[0x34..0x42]

    } Else {                       

        $RegValue = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name DigitalProductId).DigitalProductID[0x34..0x42]

    }    

    

    $ProductKey = ""                     

    for ($i = 24; $i -ge 0; $i--) {

        $r = 0

        for ($j = 14; $j -ge 0; $j--) {

            $r = ($r * 256) -bxor $RegValue[$j]

            $RegValue[$j] = [math]::Floor([double]($r/24))

            $r = $r % 24

        }

        $ProductKey = "BCDFGHJKMPQRTVWXY2346789"[$r] + $ProductKey

        if (($i % 5) -eq 0 -and $i -ne 0) {

            $ProductKey = "-" + $ProductKey

        }

    }    

    $out | Add-Member -MemberType NoteProperty -Name ProductKey -Value $ProductKey

} Catch {

    $out | Add-Member -MemberType NoteProperty -Name ErrorMessage -Value $error[0].exception.message    

}       

 

$out | Format-list | Out-String