If a machine that is not designed to support Wake-on-LAN is left powered down after power failure, it may be possible to set the BIOS to start it up automatically on restoration of power, so that it is never left in an unresponsive state. A typical BIOS setting is "AC back function" which may be "on", "off", or "memory". "On" is the correct setting in this case; "memory", which restores the machine to the state it was in when power was lost, may leave a machine which was hibernating in an unwakeable state.