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USB Flash drive not recognized

Posted on 2006-11-09
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Last Modified: 2008-01-09
I plug in the flash drive. It's recognized and ready (balloon messages in task bar), but is not available in My Computer.

After reading similar posts, I changed the drive letters of my other drives to higher letters, but still no good.  Also, the usb drive is not recognized in disk management.

TIA for any help offered

~Ron
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Question by:larkinstreetyouth
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by:Marc Z
ID: 17909966
Have you tried rebooting?  
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Expert Comment

by:Marc Z
ID: 17909976
Is this your computer or work computer?  If work and running XP Pro, it's possible that your IT turned off access to USB Drives.
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by:larkinstreetyouth
ID: 17909979
Yep, tried rebooting
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by:larkinstreetyouth
ID: 17909986
It's a work computer but I'm the IT guy - so I should be okay there  ;-)
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Expert Comment

by:dlangr
ID: 17910077
you should probably install a driver. Have a look at the site of the manufacturer if they provide them. Or if you still have the packaging,  look if a cd of floppy was provided with it.
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Expert Comment

by:nobus
ID: 17912575
try this :
USB no drive letter
delete the following key with regedit and reboot :
HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Enum USBSTOR
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Expert Comment

by:denisty
ID: 17912763
i had a card reader with that symptom before, it turns out that the cable was faulty.  so i replaced the cable and it got fixed.  since you are using a usb thumb drive, i would look at the contact points. If some of the 4 contact points are dirty or something that will not make it contact properly with the terminals then the device will be recognized but it will not be mounted (no drive letter).

and a wild guess...try using in safe mode?

lastly does it work on other computers?

good luck!
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by:nobus
ID: 17912783
>>   and a wild guess...try using in safe mode?    <<  haha - joking?   no drivers loaded . . .
 
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Expert Comment

by:Blackbirdtg
ID: 17913220
did you  check disk  manager ....

maybe de  USB  drive   has  no drive letter  yet ...
 or if  it  has a  drive letter ,  check  you  do not use the same letter  for a  network drive ...
if so  change drive letter   to  a free one ...

in   ""safely  remove  hardware""  do you  see the USB  drive ????

just wondering ...
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by:Marc Z
ID: 17914055
larkinstreetyouth,

You mentioned that the USB drive is not recognized in disk management.  When you go into Computer management from the Control Panel->Administrative Tools is it listed under Storage->Removable Storage?
And again, OS?
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Marc Z earned 1000 total points
ID: 17914173
One other thought I had.  Is it a good USB flash drive, does it work on other computers?  I recently plugged in an external USB Hard Drive with the same results. Couldn't find it in my computer,  until I went to Start->Run and typed in eventvwr.msc and looked at System and found Disk Error event id 7 - bad sector on disk.

Take a look at your System Event log.
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Expert Comment

by:Marc Z
ID: 17914194
And if you're up for a long read, see this one.  No absolute answer but the troubleshooting is very good.
http://www.experts-exchange.com/Hardware/Q_20790258.html
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Author Comment

by:larkinstreetyouth
ID: 17949419
The flash drive doesn't show up under Storage -> removable media.  The drive is recognized as a usb removable storage device and shows up under the safely remove hardware menu. There are no errors in event viewer.

As for the suggestion above for deleting a key from regedit, the key wasn't present.

This drive behaves the same way on all computers now.  My guess is that possibly the drive is damaged, but since its recognized, I was hoping I could recover data from the drive.
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Expert Comment

by:nobus
ID: 17953962
>>  This drive behaves the same way on all computers now.  My guess is that possibly the drive is damaged,   <<  agreed
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Expert Comment

by:Marc Z
ID: 17955778
Same way on all computers - ouch.  Sounds bad to me too.

So the only place you can see that it is connected is when the balloon pops up and tells you it is ready for use, correct?

You can't see it in the Device Manager, even when using the "View Devices by Connections" view?

What I'm trying to do is find a way that you can either run a scandisk or even Spinrite (needs to boot to Spinrite and be able to see it though) on this disk.

One last thought before we go.   Do you have any Linux Live CD's available?  A live cd will be booted from the CD drive and run only in system memory, not using the existing harddrive but if you have the USB thumbdrive plugged in when you boot to the Live CD, it may be able to read it.  Worth a shot, if you haven't done it yet.  What I would do is unplug any other USB devices not needed, except for maybe 1 other Thumbdrive so you could copy the bad to the good and boot up with it.

I would use Knoppix Live Cd as my test.  http://www.knoppix.org/
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Expert Comment

by:Marc Z
ID: 18025820
larkinstreetyouth,
We have not heard from you. Did any comment help you solve your problem? Do you need any clarification? If an Expert helped you, please accept his/her answer above with an excellent or good grade.


Marc
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Author Comment

by:larkinstreetyouth
ID: 18028953
I think the usb drive is dead. Please close this discussion.
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Expert Comment

by:Marc Z
ID: 18029018
Options for closing questions.  Please see this FAQ,
http://www.experts-exchange.com/help.jsp#hi67
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