I bought several MKRs for my project, both MKR1000 and MKR1400GSM. Sometimes happen that Arduino is not recognized by USB. Double click on reset switch helped.
Now, though, I have MKR1400 which is not responding. It is not recognized by Device manager (using W10 Prof), I can see error 43 "A request for the USB device descriptor failed."
So, no hardware ID is read.
After power-up, the charge LED quickly blinks for a short time. Next, LED on pin 6 lights and stay on.
Other MKR1400 device is normally visible, using the same cable and the same USB port.
I hereby confirm that:
- first of all, I read tons of topics on this forum (and other forums, as well).
- Removed foam
- Assured that USB port is not 3.0
- Tried several cables
- Tried another PC (with W7)
- Double-clicked reset switch
- I am an experienced guy, not a newbie.
I liked MKR design at first, but now I am disappointed. Seems to me that original Arduino became less reliable than Chinese clones
So, please, can somebody help me? Or, at least, suggest something useful?
Please don't suggest me the obvious things I already tried, as listed above.