Think you'll struggle with tech person unless someone local see's this request. Shame because I was down your way last weekend.

However if you can provide some info I'm sure I can get you going again.

When you say computer malfunction what exactly happened. Did you Re-install Mach3.?
If so then chances are what's needed is to re-configure the Motor Outputs and inputs etc. However this will require some info about your system/hardware.

If don't know this info then best way is to take good clear pictures of inside the control box so we can try to figure out what you have and whats connected to what.?