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USB device not recognized


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#1 vev46

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Posted 25 April 2018 - 01:39 PM

I have 2 Microsoft Lumia 640 LTE phones running Windows Phone 8.1 Update 2.  One of them has no SIM card - I use it only to access my home network, the other is a fully functional phone with a SIM card.  The problem I have is that my Windows PC running Windows 7X64 will not recognize the fully functional phone, while it readily does so with the other one.  When connecting USB to the fully functional phone, there is a double "bump" audio which indicates non-recognition and it does not show up when I open Windows Explorer, while there is a single "bump" when I connect the other, and it does show up in Windows Explorer.  On my wife's laptop, however, also running Windows 7X64, BOTH devices show up with no problem.  On my PC, I use a powered USB hub, since I have more devices than USB ports on it, but I get the same result when I disconnect the hub and use a port on the back of the PC for the phone.  My PC is usually in the sleep mode overnight, but when I shut it down and try connecting the fully functional phone, Windows begins to search for driver software, but after a few minutes produces an error saying it was unsuccessful.

 

Any suggestions would be appreciated



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#2 JohnC_21

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Posted 25 April 2018 - 02:16 PM

I can't say this will work but try the following. When multiple USB devices are attached to the same port sometimes a conflict arises between device drivers.

 

Download Device Cleanup Command , not Device Cleanup Tool. Unzip the file and in the unzipped folder you will find another folder called X64. Copy this X64 folder to the root of C:

 

Open an elevated command prompt. Type CMD in the search box and Right Click > Run as Administrator. Type the following commands

cd c:\x64
DeviceCleanupCmd *

This will remove all non-present devices. Do this with the USB hub removed but not your USB mouse, keyboard, or Printer.

 

Reboot and see if the phone is now recognized.



#3 vev46

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Posted 25 April 2018 - 06:24 PM

JohnC_21, Thanks for the suggestion.  I'm not sure I performed the instructions correctly.  What I did get was the Device Cleanup Tool window showing all the devices with many repeated many times.  I deleted many of the duplicates.  I then rebooted, connected my USB code reader, Windows searched & found driver for that, but the cellphone did the exact same thing: Triple audio "bump" (not double as I incorrectly wrote initially), and again did not connect.  I attached 2 screenshots of Device Cleanup window the way it looks now.

 

Thanks,

Vic

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#4 JohnC_21

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Posted 26 April 2018 - 10:28 AM

You did not download the correct version. You want the command line version. Use the commands in my post #2

 

https://www.uwe-sieber.de/files/devicecleanupcmd.zip


Edited by JohnC_21, 26 April 2018 - 10:29 AM.





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