I remember from 2000, memory battery dying and replaced, the core of the computer was a big red box with 'meldas' printed on the side, it had a 3.5 floppy disk drive.
A company called 'john hart' (australia) brought a disk and reloaded all the parameters.
If this exceeds your budget, then replace battery and type in manually all the missing parameters.
This can be dangerous, perform tests at low rapids with maybe a texta in a chuck, foamblock workpiece.