I know it's an old thread but it summarizes my existing problem nicely. Windows XP on an older machine off network, no printers, nothing installed but MACH3, f-engrave, and lazycam. I get random freeze-ups. I cut 3 reindeer cutouts with the same code and it froze on the 4th mid cut. I was doing an engraving into the back of plexiglass, 2 done, froze on the 3rd, 4th and 5th fine. It makes no sense.
Any ideas?