i seem to have a problem that cannot be resolved .With the cnc machine powered up, turning on the computer (win xp) during booting the cnc machine drives the z axis down by 2.5 to 3 inches( loss of control ).
I have changed all the settings on the parallel port ,changed the cable to the gorilla cnc and tried 3 computers ,problem does not go away and i'm afraid to use the machine as it could damage the z axis or the gantry.i have been shutdown for a week so far.
I don't know what to do