USB jump drives unusable with Windows7

Discussion in 'Windows 7 Help and Support' started by JillB, Mar 6, 2010.

  1. JillB

    JillB New Member

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    My laptop, an HP Pavilion dv7-1120em (Intel Centrino 2), originally running Vista Home and upgraded to Windows7 Home Premium (32 bits) in December, stopped showing my USB jump drives about a month and a half after the upgrade. In the beginning, I had only one jump drive and, when it became "invisible", I bought another which functioned normally for about a week before becoming invisible too. The second jump drive is, however, seen in the Drive Manager (I hope this is the correct term; I'm using a French system) and I can explore its contents with the Drive Manager even though I can't copy to or from the jump drive (the copying fails). Furthermore, the two jump drives work perfectly on a Windows7 (64 bits) machine, another one under XP as well as on my own laptop when I boot to a Ubuntu CD. Does anyone know of a solution? Thank you in advance.
     
  2. cybercore

    cybercore New Member

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    Did you try right-clicking on the usb-drive > security > change permissions?

    How to Change Access Privileges & Permissions on Your Computer | eHow.com

    Take and Grant Full Control Permissions and Ownership in Windows 7 or Vista Right Click Menu

    ~~~~~~~~~~~~~~~~~~~

    Reformatting to FAT32 eliminates the necessity to take ownership.
     
  3. JillB

    JillB New Member

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    Thank you for answering. Unfortunately, the two jump drives are already formatted to FAT32, and I cannot access the properties windows anyway since they are not recognized in "Computer". If you have any other suggestions, I'd be delighted to hear them.
     
  4. busydog

    busydog New Member

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    What has worked for me in this situation is to go to Device Manager and uninstall all of your USB Hubs and Controllers and let Win7 re-detect them after a reboot and re-install the drivers.
     
  5. JillB

    JillB New Member

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    Thank you for the suggestion. I tried this, including deleting things out of the (again, this is a translation from my French version) Stock Volume container. When I rebooted, nothing had changed. Win7 doesn't re-detect my USB jump drives (no info-bubble, no presence in "Computer". One drive continues to be visible in the Drive Manager, and the other (a Cruzer) prevents the Drive Manager from loading the drives; the error message is "Loading disk configuration information", and it just never progresses. Would reinstalling Windows accomplish anything? If so, what is the downside of such a move? Thank you again.
     
  6. cybercore

    cybercore New Member

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    Not necessarily, it will not guarantee resolving any hardware incompatibilities, especially if you've had this problem since or shortly after you installed Windows 7.

    I sugget you unplug all USB devices first, then try the USB jump drive again.
     
  7. JillB

    JillB New Member

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    I've been away so didn't answer. Anyway, I did try unplugging all USB devices but it made no difference. I really don't know where to go from here. Now my built-in card reader is not working either. :(
     
  8. Dhitch

    Dhitch New Member

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  9. JillB

    JillB New Member

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    Thanks for the further suggestion. I installed the drivers but nothing has changed. I'm wondering now if I'll ever get my laptop back to working properly!
     
  10. JillB

    JillB New Member

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    Not only do the drives function on another PC, but they also function on my laptop when running Linux!
     
  11. JillB

    JillB New Member

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    Thanks for the suggestion. Should I delete all of them, or just one specific kind?
     
  12. JillB

    JillB New Member

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    Ok, I went into safe mode and deleted (uninstalled) all the USB root hubs. I still can't see my flash drives. Can a reinstall of Windows work from an upgrade disk? I didn't buy the full version...
     
  13. JillB

    JillB New Member

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    Thank you - I'll definitely try this, but in a few days as I need my computer right now!
     

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