I have a problem when I am running my DIY CNC with Ardunio Uno R3 with CNC Shied. Sometimes it works jut fine, but other times, it says it can't find the port. I have used two different USB cables that I know work. I can't figure out what is happening. Sometimes, I reboot and then starts working again. Other times, it stops in middle of a job (yes, I am ensuring computer does not sleep, etc., so that is not the issue) and then has trouble reconnecting after it stops. I tried changing the UBS port and sometimes it works and sometimes it does not. The computer is recognizing when I plug it into the USB as I do hear that little sound. However, sometimes it says USB device not recognized and other times is does not say that. This is weird as it's a totally random when it works and when it does not. It's basically as 50/50 chance that it works. I am using Windows 10 32-bit (most up to date version of Window and Ardunio).
Has anyone experienced this and found a solution. Any guidance would be greatly appreciated.