Your CMOS back up battery is bad. All of your errors relate to that.
I do not know what is inside your machine but the possibilities are:
NI-CAD battery soldered onto the mother board.
Cr2032 in a battery holder.
Dallas Real time clock IC.
Needs to be replaced and CMOS set.
Because the EZTRAK does not have a full size keyboard, this keyboard test/error is disabled in CMOS.