Check if the local admin needs to run the script as administrator. If not a local admin relaunch script as admin user.

Check-IsAdmin.ps1

#Check if PowerShell version is greater than 2. If not, set $PSSriptRoot.
if ($PSVersionTable.PSVersion.Major -lt 3) {
    $PSScriptRoot = Split-Path -Parent $MyInvocation.MyCommand.Definition
}

#Check if the user is a local admin. If they are, set $LocalAdmin to $True.
$LocalAdmin = $false
if ((net localgroup administrators) -match ([System.Environment]::UserDomainName + "\\" + [System.Environment]::Username)) {
    $LocalAdmin = $true
}
if ($LocalAdmin) {
    #Check if the local admin needs to run the script as administrator
    if (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
        $arguments = "& '" + $MyInvocation.MyCommand.Definition + "'"
        Start-Process powershell -Verb runas -ArgumentList $arguments
        break
    }
}
else {
    #Not a local admin. Relaunch script as admin user.
    Start-Process -Credential $credential (Join-Path $PSHome powershell.exe) -ArgumentList (@("-File",
            (Join-Path $PSScriptRoot $MyInvocation.MyCommand)) + $args)
    exit
}


### Put the remainder of the scipt here ###