monitor_off_block_input

if not A_IsAdmin {
    run *RunAs "%A_ScriptFullPath%"
    ExitApp
}
#SingleInstance, force
    SendMessage, 0x112, 0xF170, 2,, Program Manager   ; 0x112 is WM_SYSCOMMAND, 0xF170 is SC_MONITORPOWER.
    BlockInput, on
    Input, doesntmatter,, {Escape}{Space}{Control}{Shift}{CapsLock}
    BlockInput, off
    exitapp
    return