Re: Unit Won't turn on after charging
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I had that same thing happen to me... Where windows insisted it had the "best" driver. The problem was it had installed A driver, but actually had the device listed under the wrong category in device manager. In update mode it SHOULD NOT be on a com port it should be as it is shown in the paste below. (as a Universal Serial Bus Controller).You must first remove the device using device manager. If that doesn't work, I eventually used a program called Zadig to manually load the correct driver. But, as was stated by Larry the defective usb cable seemed to be the root issue.
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On Wednesday, March 2, 2022, 04:00:48 PM EST, Larry Rothman <nlroth@...> wrote:
If you're using the original USB cable that came with the Nano - try another one. A number of Nano users have had issues with those original cables. Also, refer to a message thread from a few days ago regarding the device drivers. ? ? On Wednesday, March 2, 2022, 03:42:48 p.m. EST, Brady Nelson <tbradynelson@...> wrote:? Update: Can't get NanoVNA to show up as anything but "Unknown USB Device (Device Descriptor Request Failed" in windows device manager. I have the STM32 drivers installed, and forcing windows to install the drivers fails -- it says it already has the correct drivers installed. Any ideas of something else to try? Maybe the hardware failed somehow, even though I've barely used it. |
