I got Mach3 a few yrs ago and it worked fine till computer crashed (something on mother board went bad.). I let system sit for a yearr or so. Just picked up an older XP machine and loaded Mach onto it. Everything seems to function properly in simulation mode. I'm using the same HobbyCNC control box and other equipment. When I turn on the power to the Control box, the steppers lock up as normal. However, Mach does not appear to be sending any signals to the controller or steppers. Tried direct commands, jogging, nothing. I'm thinking it is in the configuration, but it's been a long time since I fiddled with that. Any thoughts or ideas to isolate and correct the problem would be appreciated! Thanks!