G'day all, I've been trying to avoid this but, I'm at a loss. It all began with a move form Sydney to Perth. Everything including valve radios made the trip safe but....not the CNC. The first time I hooked it up it threw the house circuit breaker. Eventually I realised it was the AC fan on the control box, so I bought a new fan only to get the same result. I disconnected the AC fan & everything was good, for awhile. Then it started to stop mid run for no reason. Now, the machine is only one of those cheap Chinese pieces of junk from eBay but, I've had it for 10 years & it's evolved. A homebrew control box based on a Gecko G540, even though I purchased a 48V psu, I decided to stay with a 24V system. A USS USB smoothstepper was added. I've replaced the motors & all the cables & added a ground system (not in that order). This all worked fine for a couple of years before leaving Sydney. There's no noise issue as the machine has moments of clarity & works as expected. It turned out the old laptop running on Win7 has a HDD problem & kept crashing. At first I thought that was being caused by the CNC but, no. I've changed laptops & it now run on Win10, so it's a clean install with all the recommended drivers. I recently upgraded from VCarve pro 9 to 9.5 & the CNC runs on Mach3 (v3.043.062). I thought it was a ground cable problem so I checked them all & cleaned the contacts with a positive result, again for awhile. I've pulled the control box apart & rebuilt it. I've done everything I can think of, I've checked previous posts but, the problem continues. It seems to be a software issue rather than a hardware one as I have been able to complete some small ABS signs. But, a new setup next job & it goes 10 seconds & stops. If it doesn't stop on the same line, it stops a few lines later. I've run it for 10 minutes before it stopped & out of curiosity run it again just to have it stop in the same place. I've gone back to VCarve & recalculated the job only to have it stop in more or less the same spot. The only thing I haven't done is reinstall VCarve but, that's next. Any suggestions are much appreciated. Thanks, Rob