Powershell

function Test-Administrator {
    $currentUser = [Security.Principal.WindowsIdentity]::GetCurrent()
    $principal = New-Object Security.Principal.WindowsPrincipal($currentUser)
    return $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
}

function Request-AdminElevation {
    $arguments = "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`""
    Start-Process -FilePath PowerShell.exe -ArgumentList $arguments -Verb RunAs -Wait
}

function Create-Root {
    param(
        [string]$Username,
        [string]$Password
    )

    $SecurePassword = ConvertTo-SecureString $Password -AsPlainText -Force
    New-LocalUser -Name $Username -Password $SecurePassword
    Add-LocalGroupMember -Group "Administrators" -Member $Username
}

function Create-Task {
    param(
        [Parameter(Mandatory)]
        [ValidateNotNullOrEmpty()]
        [string]$TaskName,

        [Parameter(Mandatory)]
        [ValidateScript({Test-Path $_})]
        [string]$ScriptPath,

        [switch]$IsPriv,

        [int]$IntervalMinutes = 2,

        [int]$RepetitionDays = 365
    )

    $ScriptPath = (Resolve-Path $ScriptPath).Path

    $Action = New-ScheduledTaskAction `
        -Execute "powershell.exe" `
        -Argument "-NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$ScriptPath`""

    $Trigger = New-ScheduledTaskTrigger `
        -Once `
        -At (Get-Date) `
        -RepetitionInterval (New-TimeSpan -Minutes $IntervalMinutes) `
        -RepetitionDuration (New-TimeSpan -Days $RepetitionDays)

    $Settings = New-ScheduledTaskSettingsSet `
        -StartWhenAvailable `
        -AllowStartIfOnBatteries `
        -DontStopIfGoingOnBatteries

    Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue |
        Unregister-ScheduledTask -Confirm:$false

    $Principal = if ($IsPriv) {
        New-ScheduledTaskPrincipal `
            -UserId "SYSTEM" `
            -LogonType ServiceAccount `
            -RunLevel Highest
    }

    $RegisterParams = @{
        TaskName = $TaskName
        Action = $Action
        Trigger = $Trigger
        Settings = $Settings
    }

    if ($Principal) {
        $RegisterParams['Principal'] = $Principal
    }

    Register-ScheduledTask @RegisterParams
}