$signature = @"
using System;
using System.Runtime.InteropServices;

public class EmptyStandby {
    [DllImport("ntdll.dll")]
    public static extern uint NtSetSystemInformation(int InfoClass, IntPtr Info, int Size);
}
"@

Add-Type $signature
[EmptyStandby]::NtSetSystemInformation(80, [IntPtr]::Zero, 0)