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General Mach Discussion / Mach3 with SmoothStepper connected,causing computer to restart

« on: May 16, 2016, 10:29:36 AM »

When i start the Mach3 with SmoothStepper connected,my pc resets itself.

I use a SmoothStepper,so i get up (TheESS has an invalid bootloader signature)

So i need to turn off the power to SmoothStepper and start mach3 again this time,mach3 with SmoothStepper is working without PC being reset

Always when I start the pc this happens,only if i start Mach3 with SmoothStepper connected.

What could be wrong?

My pc is brand new,i use Windows 8.1 pro and is 64-bit.