01-23-2016 07:29 AM
30 12
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  1. Sumukh Phalle1992's Avatar
    On my windows 10 pc, it's showing error "The last USB device you connected to this computer malfunctioned, and Windows does not recognize it.".
    Well i haven't got Technical Preview on my laptop but my phone L640XL having Technical Preview. Other windows phones (non TP) are able to connect but only my phone isn't connecting. Many USB cables tried but error is same.
    On my laptop all drivers are up-to-date. So i think the problem is with my phone. Please help to solve this problem.
    01-21-2016 03:24 AM
  2. Sumukh Phalle1992's Avatar
    Also it's showing "device charging slowly" error on phone
    01-21-2016 03:26 AM
  3. ads13's Avatar
    Replug the usb data cable.
    Or
    Attach USB cable direct to the usb slot.(in case of using USB hub)
    01-21-2016 03:31 AM
  4. Sumukh Phalle1992's Avatar
    I tried it but nothing happened...
    01-21-2016 03:32 AM
  5. ads13's Avatar
    Also it's showing "device charging slowly" error on phone
    It's because you have to use your original charger
    or
    using old model of USB data cable(whether its Nokia made)
    01-21-2016 03:33 AM
  6. Sumukh Phalle1992's Avatar
    I connected L520 with same cable.. L520 added successfully.. So no matters which cable i connect..
    01-21-2016 03:35 AM
  7. ads13's Avatar
    I tried it but nothing happened...
    Use another USB cable.
    Or
    Use card reader
    Or
    If it isn't work then use Shareit. Or Easy transfer (works with Wi-Fi connection)
    01-21-2016 03:36 AM
  8. Sumukh Phalle1992's Avatar
    Just connected L535 and it's also working.. I think the problem is with L640XL (Technical Preview) updated.
    01-21-2016 03:38 AM
  9. ads13's Avatar
    I connected L520 with same cable.. L520 added successfully.. So no matters which cable i connect..
    It matters for sometimes. You have to try another one USB cable.
    01-21-2016 03:41 AM
  10. Sumukh Phalle1992's Avatar
    Dude, i have tried nearly 4-5 usb cables.. Is there problem with current build 10.0.10586.36?
    01-21-2016 03:43 AM
  11. ads13's Avatar
    Just connected L535 and it's also working.. I think the problem is with L640XL (Technical Preview) updated.
    I'm not sure but the main reason is your phone's model which isn't compatible with your usb cable.
    01-21-2016 03:43 AM
  12. ads13's Avatar
    Dude, i have tried nearly 4-5 usb cables.. Is there problem with current build 10.0.10586.36?
    Hope so. That's why I haven't use win10m yet.

    I suggest you to downgrade your mobile OS to 8.1
    01-21-2016 03:44 AM
  13. Sumukh Phalle1992's Avatar
    Well downgrading to W8.1 is not possible.. Anyway Thanks!
    01-21-2016 03:49 AM
  14. ads13's Avatar
    Well downgrading to W8.1 is not possible.. Anyway Thanks!
    http://forums.windowscentral.com/e?l...token=wgdtEoIe
    Last edited by Aman Deep Singh; 01-21-2016 at 05:45 AM.
    01-21-2016 03:55 AM
  15. Sumukh Phalle1992's Avatar
    Above link is not active..
    01-21-2016 04:30 AM
  16. ajayden's Avatar
    Above link is not active..
    Since you have tried all the options mentioned in the posts above, just soft reset your phone and connect to the computer.

    If it still does not connect, then try to hard reset your phone and then connect.
    01-21-2016 04:40 AM
  17. Sumukh Phalle1992's Avatar
    Since you have tried all the options mentioned in the posts above, just soft reset your phone and connect to the computer.

    If it still does not connect, then try to hard reset your phone and then connect.
    01-21-2016 04:44 AM
  18. Sumukh Phalle1992's Avatar
    When i plugged my phone to pc, (in device manager>Universal Serial Bus controllers>Unknown device). This "unknown device" is visible for only 1-2 sec and after it hides. But after my quick clicks, i was managed to check properties. Then i found this, "Unknown USB Device (Device Descriptor Request Failed) Properties".
    Is there any solution except "Hard Reset"?
    01-21-2016 01:42 PM
  19. RumoredNow's Avatar
    Try this utility on your PC: View any installed/connected USB device on your system

    Right click the .exe and Run as Admin. Then delete any USB drivers marked for Nokia or Lumia. Now plug the phone in and let a fresh instance for drivers install.
    ajayden likes this.
    01-21-2016 02:51 PM
  20. Sumukh Phalle1992's Avatar
    Not working! Neither Hard reset nor above procedure...
    Now checking sd card for errors.. Hope this will work..
    RumoredNow likes this.
    01-22-2016 10:41 AM
  21. ads13's Avatar
    Go to MS reseller then.
    01-22-2016 12:05 PM
  22. Sumukh Phalle1992's Avatar
    Can I solve it by MS-DOS or any app?
    01-22-2016 01:54 PM
  23. ads13's Avatar
    If you are using win10 mobile then Again I suggest you to get back to windows 8.1 by
    First, leave the insider program.
    Use Windows device Recovery tool to get back to stock version.

    Link - http://wmpoweruser.com/how-to-roll-b...ows-10-mobile/
    Sumukh Phalle1992 likes this.
    01-22-2016 08:30 PM
  24. ajayden's Avatar
    Not working! Neither Hard reset nor above procedure...
    Now checking sd card for errors.. Hope this will work..
    Also it might be an issue where the mini USB port on the phone is damaged. You need to bring to a service center to check. Before going to the service center, try to downgrade to 8.1 and check if it works.
    Sumukh Phalle1992 likes this.
    01-22-2016 08:39 PM
  25. Sumukh Phalle1992's Avatar
    A sec before i decided to rollback to 8.1 but the main problem is, for rollback my phone should be connected to PC! And this is not possible. Because my phone doesn't detect on PC. So rollback will not work.
    Now i think, I have to wait for next update.
    01-22-2016 09:15 PM
30 12

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