I've got 5 or 6 Avaya 9640 IP phones that are in a continuous boot loop. There is no place that will allow me to type the reset sequence in (mute craft #). When I plug them in, they come up with Avaya One X and load there for a minute or so, then go to another color Avaya One X screen and load there for about 20 seconds then redo it all over again. There is never any * to program, and if I enter the reset sequence stated above nothing happens. Not sure if there is anything I can do to wipe these phones clean? Any help is appreciated.