What does BPCZM stand for?
A EZTRAK from 1998 should boot from the hard drive.
You may need to check the CMOS settings as they may have gone to default. If so there is no guarantee if it will boot correctly (read the hard drive or floppy correctly).
Or it may have corrupted software. Best advice for long term reliability would be to get a DOM preloaded with software from EMI-inc.net
If the CMOS battery is dead, it has to be replaced. Probably is a Ni-Cad and if it leaks will kill your mother board. It is soldered on. Then CMOS set.
Search this forum. This is a very common issue.