Unknown Device Frustration


  1. Posts : 3
    Windows 7
       #1

    Unknown Device Frustration


    Hi,

    I have Windows 7 RC. I am having an annoying problem, and I cannot figure out how to solve it. Basically, any external media I attach to my netbook shows up as an "unknown device" in device manager and does not show up in my computer as a drive.

    Relevant troubleshooting info:

    1) This happens with USB drives that work in other computers
    2) This happens with either USB port.
    3) This happens with the internal Secure Digital Card reader.

    I can't reinstall Windows 7 or install another operating system without some way to boot to the USB or SD.

    Any ideas?

    Thanks
      My Computer


  2. Posts : 682
    Window 7 build 7600, Xp pro(VM)
       #2

    welcome brandoncolorado to Sevenforums.....

    open device manager(while the device is in the usb port ) expand the universal serial bus controller and check if there is any exclamatory sign on the icon of Usb mass storage device.

    post a screen shot if possible...
      My Computer


  3. Posts : 3
    Windows 7
    Thread Starter
       #3

    Thanks for the quick reply.

    To clarify, this doesn't only happen with USB drives, it also happens with SD cards.

    I have attached two screenshots of the device manager. You can see the exclamation point under "other devices." This is the device that is added/removed each time I insert or remove some media.

    Thanks for any advice.
    Attached Thumbnails Attached Thumbnails Unknown Device Frustration-ss1.png   Unknown Device Frustration-ss2.png  
      My Computer


  4. Posts : 682
    Window 7 build 7600, Xp pro(VM)
       #4

    Try reinstalling the Usb mass storage device under universal serial bus controller.

    And are you sure that it is not a loose connection..............
      My Computer


  5. Posts : 3
    Windows 7
    Thread Starter
       #5

    Hey,


    Thanks again. I actually just solved the problem by finding a solution on your forum. As it turns out, there is some bug. Here is what I did:

    1) Copy the entire C:\Windows\INF folder to C:\NewFolder
    2) Tell windows to search for the driver there instead of /INF
    3) Blammo! It just works right away for both types of media.

    This is a really annoying problem, but hopefully somebody finds this useful.

    Thanks again
      My Computer


  6. Posts : 682
    Window 7 build 7600, Xp pro(VM)
       #6

    I am glad it is fixed..........
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 19:45.
Find Us