Solved

USB HD Error

Posted on 2014-12-25
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Last Modified: 2014-12-26
Anyone know how I can fix :
Device Descriptor Request Failed - - UNKNOWN USB Device ...
,,
?
Windows 8.1
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Question by:mvalencia2003
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by:John Hurst
John Hurst earned 250 total points
ID: 40518076
Does it show in Disk Management (Computer, right click, Manage)?

Does the USB hard drive work in any other computer?

If no to the above, it may not be feasible to recover. (Costly if necessary to recover).
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nobus earned 250 total points
ID: 40518197
Here a list of things to try :
-from Device manager scan for new hardware
-in device manager>view tab, click "show hidden devices" and delete all usb entries and hidden devices,  reboot and test
-then you can download the latest drivers for the chipset, and reinstall it to update the USB root hubs
-start>run>diskmgmt.msc      check if the usb devices show up in disk management, then run :   start>run>services.msc
In the listing look for removable storage service.
If it is set to Auto, and not started, then start it : click the Start link in the top left...
-In c:\windows\inf, look for usbstor.inf    -  If it is not there, you can copy it from another PC..When you find it, right click it and select Install


here is how to troubleshoot it :  http://msdn.microsoft.com/en-us/library/windows/hardware/jj151572(v=vs.85).aspx
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by:mvalencia2003
ID: 40518598
Thanks all ,, I had to remove HD from case and just install as internal HD (secondary) on my PC .. worked this way
-
Guess WD Chipset went bad
?
?


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by:John Hurst
ID: 40518601
Thanks for the update and I was happy to help.
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by:nobus
ID: 40518646
it is not a WD chipset, but an usb chipset - in the ext case - for the usb bridge to sata
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by:mvalencia2003
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?
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by:nobus
ID: 40518667
? ?
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