I am using MACH3 under Windows 7 with Mach3-USB-3-Axis-CNC-Motion Control Card Breakout Board 2MHz. I made the setup and everything was
working perfectly. Suddenly the system stopped working, completely frozen. Motors, drivers, and card seem to be working fine. I noticed that MACH 3 main screen is frozen, not even able to move the axis in the screen
with the virtual jog, if I start a simulation with a toolpath uploaded, it does not run.
I tried to install again Mach3, even using another computer, Mach3 behavior is the same. Any suggestion will be highly appreciated.
Thank You
E.

Does the another computer running on Windows 7 as well?

Yes, both computers have Windows 7.
Thanks,
E.

i have the same on XP machine