Rename-DomainComputerToSerialNumber.ps1

<#
.SYNOPSIS
    Renames a Domain Computer to its Serial Number.
.DESCRIPTION
    Connects to the Win32_Bios Wmi Class and retrieves the Serial Number, if the existing computer name does not match the serial number, it will be renamed.
.EXAMPLE
    Reanme-DomainComputerToSerialNumber -ComputerName "MyComputer.mydomain.org" -Restart
.EXAMPLE
    $cred = Get-Credential; @("ComputerA","ComputerB","ComputerC") | Reanme-DomainComputerToSerialNumber -DomainCredential $cred -Restart
.NOTES
    Requires PowerShell V3.
.LINK
    http://dotps1.github.io
#>
function Rename-DomainComputerToSerialNumber
{
    [CmdletBinding()]
    [OutputType([Void])]
    Param
    (
        # ComputerName, Type String, Computer Name(s) to be renamed to serialnumber.
        [Parameter(Mandatory = $true,
                   Position = 0,
                   ValueFromPipeline = $true)]
        [ValidateScript({ if (-not (Test-Connection -ComputerName $_ -Quiet -Count 2)) { throw "Failed to connect to $_.  Please ensure the system is available." } else { $true } })]
        [String]
        $ComputerName,

        # DomainCredential, Type PSCredential, Domain Credentials to use that has administrative rights to make the change.
        [Parameter(Position = 1)]
        [PSCredential]
        $DomainCredential,

        # Restart, Type Switch, Forces a reboot if used.
        [Parameter(Position = 2)]
        [Switch]
        $Restart
    )

    Begin
    {
        if (-not ($PSBoundParameters.ContainsValue($DomainCredential)))
        {
            $DomainCredential = Get-Credential
        }
    }
    Process
    {
        try
        {
            $getwmiobjectParams = @{
                Class        = 'Win32_Bios'
                Namespace    = 'root\CIMV2'
                ComputerName = $ComputerName
                Property     = 'SerialNumber'
                ErrorAction  = 'Stop'
                Credential   = $DomainCredential
            }

            if ($ComputerName -eq $env:COMPUTERNAME)
            {
                $getwmiobjectParams.Remove('Credential')
            }

            $serialNumber = (Get-WmiObject @getwmiobjectParams).SerialNumber
        }
        catch
        {
            Write-Error $Error[0].Exception.Message
        }

        if ($ComputerName -ne $serialNumber)
        {
            $renamecomputerParams = @{
                ComputerName     = $ComputerName
                NewName          = $serialNumber
                Force            = $true
                ErrorAction      = 'Stop'
                DomainCredential = $DomainCredential
                PassThru         = $true
            }

            switch ($Restart)
            {
                $true  { $renamecomputerParams.Add('Restart',$true) }
                $false { $renamecomputerParams.Add('Restart',$false) }
            }

            try
            {
                Rename-Computer @renamecomputerParams
            }
            catch
            {
                Write-Error $Error[0].Exception.Message
            }
        }
    }
}