Hello all. I'm looking for some support on assembly of my Proforge 2S. I have everything together and sucessfully flashed the marlin firmware to the control board. the next step was to power up the machine with the usb plug still connected (touchscreen still unplugged) and the moment I flipped the switch my PC (thankfully an old/spare one) got fried... So on next attempt after double checking all wiring (with another old PC) I powered on the printer first (had proper fan spinning) plugged the blue USB cable to the PC first, and as I approached the USB port on the printer the outer grounding shell of the cable and the USB socket sparked so I did NOT continue plugging in the USB cable. I did a continuity test on the USB cable pins from end to end and all is well there. Not sure what to test next? Controller still seems to work as I have proper fan activity. Any ideas?