HELP, how to set the centre of the print bed as the home pos

I am havinng the issue of the new buld hypercube not moving to the centre of the bed after homing but starting the print at the home front left corner of the build plate , So I am thinking of setting the home pos at the bed centre. can someone emplane how to set the centre of the print bed as the home pos with out using EEPROM, I do not have an LCD and run prints from a laptop via USB.
I wouls like to test if this would over write the issue.
the machine move both X and Y +100 correctly, and bed size is set in the slicer and firmware x200 y200 z180...
any help will be really awesome

To get prints centered you need to set your bed size in the slicer.

having the center at 0,0 will just confuse the **** out of anyone trying to help you as its completely non standard unless you have a delta.