<#
.SYNOPSIS
   Get the current status of the TPM.
.DESCRIPTION
   Tests the status of the Trusted Platform Module, only returns true if both enabled and activated.
.EXAMPLE
   Get-TpmStatus
.EXAMPLE
   Get-TpmStatus -ComputerName "mycomputer.mydomain.org"
.LINKS
    https://github.com/necromorph1024/HPTpmAndBitLocker
    https://msdn.microsoft.com/en-us/library/windows/desktop/aa376484%28v=vs.85%29.aspx
#>
function Get-TpmStatus
{
    [CmdletBinding()]
    [OutputType([PSobject])]
    Param
    (
        # ComputerName, Type string, System to evaluate TPM against.
        [Parameter(Position=0,
                   ValueFromPipeline=$true)]
        [string[]]
        $ComputerName=$env:COMPUTERNAME
    )

    if (-not(Test-Connection -ComputerName $ComputerName -Quiet -Count 2))
    {
        throw "Failed to connect to $ComputerName.  Please ensure the system is available."
    }

    try
    {
        $tpm=Get-WmiObject -Class Win32_Tpm -Namespace "root\CIMV2\Security\MicrosoftTpm" -ComputerName $ComputerName -ErrorAction Stop
    }
    catch
    {
        throw "Failed to connect to the Win32_Tpm Namespace, You may not have sufficent rights."
    }

    if (-not($tpm.IsEnabled_InitialValue))
    {
        $enabled="No"
    }
    else
    {
        $enabled="Yes"
    }
    
    if (-not($tpm.IsActivated_InitialValue))
    {
        $activated="No"
    }
    else
    {
        $activated="Yes"
    }

    $tpmStatus=[PSCustomObject] @{
                                      'Enabled'  =$enabled
                                      'Activated'=$activated
                                 }
    return $tpmStatus
}