Windows 8 and 8.1 Forums


Bluetooth Device Missing, Unknown USB Device

  1. #1


    Posts : 3
    Windows 8.1 Professional

    Bluetooth Device Missing, Unknown USB Device


    Recently I attempted to connect to an existing paired connection to my phone via bluetooth. I have never had this problem before, yet suddenly Bluetooth is missing. There is no longer an icon in the taskbar, the setting in "PC and Devices" is missing, and there appears to not be a driver installed, rather, an ""Unknown USB Device (Device Descriptor Request Failed)" appears in my devices instead. I have taken many steps to attempt and fix this, such as:


    • manually starting Bluetooth services from services.msc
    • uninstalling the "Unknown Device" driver, then attempting to let Windows reinstall
    • downloaded the driver software from Lenovo for the Bluetooth adapter, installed it manually restarted
    • take a system restore created yesterday and revert back to it


    Everything else in the PC functions perfectly. Any help is appreciated

      My System SpecsSystem Spec

  2. #2


    Posts : 9
    Windows 8.1


    I had a similar problem recently where my bluetooth seemed to have just disappeared.
    I ran the Find and Fix problems with devices (Just typed it into the start screen). It found one thing which by memory said something about a usb device being disabled. Clicked for it to fix the problem and enable it. Sure enough my bluetooth was right back.
    Not sure if it will work for you, but its worth a try.
    Good Luck
      My System SpecsSystem Spec

  3. #3


    Posts : 3
    Windows 8.1 Professional


    Ok, I finally solved this. I ran CCleaner today to remove unused temp files and registry errors and restarted. Suddenly the driver started installing and works perfectly. Must have been a weird registry error.
      My System SpecsSystem Spec

Bluetooth Device Missing, Unknown USB Device
Related Threads
I know that a similar question has been asked before but, not with the last part of the message, (Device Descriptor Request Failed). I get this, in Device Manager, and I have searched for an answer on the net. Also it is a Code 43. I went through my laptop, with an HP Technician this morning, I...
Unknown device in Device Manager in Drivers & Hardware
My friend's fairly new computer has started showing an unknown device in Device Manager. The hardware id in properties shows USB\VID-08B1&PID_0018&REV_1501 I've tried to find this on the PCI Database website but have been unsuccessful, as has a Google search. Any ideas how to find out what...
My computer keeps telling me Unknown USB Device (Device Descriptor Request Failed), so I looked up how to fix it and they told me to uninstall it then scan for hardware changes and it will reappear working properly.:thumb: Only it did not come back working properly, it came back the same. :mad: I...
when look in the device manager i get this: http://cloud.addictivetips.com/wp-content/uploads/2010/04/UnknownDeviceManager.jpg and PCI Device above this to unknown device ( i took this photo from google) when i try to delete it back after restart or Scan hardware change please help...
unknown usb device? in Drivers & Hardware
My box is windows 8 pro x64, and M/B is asus p6x58d premium. 23022 23023 I deleted this driver, but after sometimes this driver recovered by itself.
Hi, On a fresh clean Windows 8 image, my software driver (signed) installs fine and shows up properly in the Device Manager. However once i uninstall it , subsequent reinstalls show up as 'Unknown Device' in the Device Manager. From the device details, I find that it refers to /looks for the...
Unknown device in Drivers & Hardware
Hi, Recently I upgraded my windows home premium o/s to win 8 without much fanfare. After the installation was complete I notice under the Device Manager , 1 Device Unknown is shown. This means 1 device has no driver. Can anyone tell me: 1. How I can identify this missing driver? 2. Where...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook