Set the status of a Group Policy Object with Powershell (https://web.archive.org/web/20200918222531/https://powershell.org/2013/02/set-gpo-status-with-powershell/)

Set-GpoStatus.ps1

Function Set-GPOStatus
{
    <#
        .Synopsis
        Set the status of a Group Policy Object
        .Description
        Sets the status of one or more Group Policy objects.
        .Example
        PS C:\> Get-Gpo MyGPO | Set-GPOStatus -Status AllSettingsEnabled
        .Example
        PS C:\> Set-GpoStatus MyGPO -Status ComputerSettingsDisabled -whatif
        .Inputs
        String or a Group Policy object
        .Outputs
        None
        .Notes
        Credit for this function goes to Jeff Hicks:
        http://jdhitsolutions.com/blog/2013/02/set-gpo-status-with-powershell/

        #######################################################################
        # WARNING: This script has been tested function correctly in a lab environment.
        # Use at your own risk and don't blame me if you break stuff!
        #######################################################################
    #>

    [CmdletBinding(SupportsShouldProcess)]

    Param
    (
        [Parameter(
            Mandatory=$True,
            ValueFromPipeline,
            ValueFromPipelinebyPropertyName
        )]
        $DisplayName,

        [Parameter(ValueFromPipelineByPropertyName)]
        [ValidateSet(
            'AllSettingsEnabled',
            'AllSettingsDisabled',
            'ComputerSettingsDisabled',
            'UserSettingsDisabled'
        )]
        $Status,

        [string]
        $Domain,

        [string]
        $Server
    )

    Begin
    {
        $Splat = @{ ErrorAction="Stop" }
        if ($Domain) { $Splat.Add("Domain",$Domain) }
        if ($Server) { $Splat.Add("Server",$Server) }
    }

    Process
    {
        if ($Displayname -is [string])
        {
            $Splat.Add("Name",$DisplayName)
        
            Try { $Gpo = Get-GPO @Splat } Catch { $_; return }
        }
        else
        {
            $Splat.Add("GUID",$DisplayName.Id)
            $Gpo = $DisplayName
        }

        if ($PSCmdlet.ShouldProcess("$($Gpo.Displayname) : $Status "))
        {
            $Gpo.GpoStatus = $Status
        }
    }
}

#requires -Version 3.0
#requires -Module GroupPolicy