USB Flash drive not visible in My Computer

By narinder_ishar ·
Hi...My machine finds the new hardware when I plug in my flash drive but I am not able to see it in 'My Computer' . I tried going to DIsk Management but I can't view my flash drive there too!! Really have no idea how I can resolve this issue.The current drives on my system are C:,D:,E: (Memory stick drive-removable drive) and F:.Also no network drive is mapped!! Anybody ..Please please help

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by ar_shashikumar In reply to USB Flash drive not visib ...

Is your computer is detecting your flash drive? if no, reinstall your usb driver. If Yes, log on to the system using administrator mode and check it. Probably you may be categorized into users group. Permissions might not give to ur username for using flash drives.

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Same problem

by tail In reply to Permissions

I can see the flash drives but cannot access them. I cannot get into my floppy drive either as "access is denied".

Please help me


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same problem

by tail In reply to Same problem

My other USB devices like printer, mouse and keyboard work 100%

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Might be flash drive has gone

by ar_shashikumar In reply to Same problem

you are able to see the drive icon in my computer but unable to access right? so go to disk management and open. If it is showing the icon, definitely it has to open in disk management. earlier u said it is not showing the icon itself. now u r saying it is showing but could not be open. anyway it ll work by opening through disk management. and try logging on to the system in Administrator mode.

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same problem

by sureshkumar07-in In reply to Same problem

acess is denied because ur not in administrator mode or u may be restricted to use the drive or may be the drives are encrypted so try to log on to administrator mode and try to acess the system

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Re-assign current removable drive's letters

by sur4dude88 In reply to USB Flash drive not visib ...

This has worked for me. Try this. Go to Disk Mgt and re-assign your E drive to M (for Mem stick) and F to N. Close out of it. Reinsert your thumb drive. It should pop up as E or F.
Like I said this has worked for me on XP Pro SP2. If it doesn't work for, you can always change M and N back to E and F.

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USB not detected

by sunil_siebel In reply to Re-assign current removab ...

Thanks for your comments, but even after assiging a Drive letter, my computer is not recognising my USB drive.

Any comments please ....!

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USB not detected

by tail In reply to USB not detected

My problem has been solved. My computer is an Acer and it has a programme supplied with it called "Avocnet Adminworks Agent x6."
This has been disabled and I can now read my flash drives again.
Can anyone tell me anything about the above programme?

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by ambientmusic In reply to USB Flash drive not visib ...


I had the same problem and after 2 weeks of searching for a solution, I realized that the solution was right under my nose the entire time:



Download and install the little app and then go to the drives tab and make sure all the drives are checked.

Your USB and other removable drives will then become visible in My Computer.

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USB drives not shown in XP. Solution. :)

Changing the registry configuration could make your computer un-usable or un-stable.
Solution to USB or FireWire drive not showing.
However, the disconnect conflicted storage device to free up the drive letter fix may not be practicable or usable by some, such as computers which are on a network or system running data transfer activity to all its drive assignments continuously flow without stopping, and thus disconnect or reassigning any mapped drives, networked drives, removable drives or other storage drives is not an option.
In this situation, there is another workaround hack to fix the no USB or FireWire drive issue. The workaround fix relies on the registry tweak below to change the drive letter that has been previously assigned to the mounted USB or FireWire portable mobile flash or hard disk drive. Or if users wish, can opt to delete any reference to the detected drives by the device so that when the storage device is plugged in again, the whole drive letter assignment will be start from fresh, and clean.
1.Login to Windows as an Administrator.
2.Open Registry Editor by typing regedit (or regedt32.exe in older Windows prior to XP) in Run command of Start Menu and then press Enter.
3.Navigate to the following registry key:
4.Optional step which not required in Windows XP or later, right click on MountedDevices, then select Permissions. You can also click Permissions from the Security menu.
5.Optional step which not required in Windows XP or later, check the option to make sure that Administrators have full control to the registry key. Change and revert back this setting when you are finished with the reset of the steps.

6.If you run above 2 steps in OS earlier than Windows XP, quit regedt32.exe and run regedit.exe.
7.Also in the HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices registry branch selected, in the right pane, find and locate a registry value which represents the troubled USB or FireWire drive. The registry key should have the name that resembles the format of \DosDevice\X: where X can be any alphabet letter which corresponding to your physical system drive letter.

Here?s a guidelines that you can follow to quickly determine which registry key is linked to your conflicted drive letter:
Exclude \DosDevice\A: and \DosDevice\B: which normally reserved for floppy disk drives.
Exclude \DosDevice\C: which normally is the system root drive.
If you have more than one fixed hard disk drives, then any drive letters that are using by them is not possible linked again, UNLESS the additional hard disk drive is added AFTER you first use the USB or FireWire device that now unable to show.
Same case with CD-ROM or DVD-ROM optical drive as above reasoning.
If you have inserted and mounted a lot of thumbdrives, USB flask drive, or external hard disks before, you will likely still see a lot of remaining registry values that you won?t know which is which. In this case, double click on each remaining registry key values to view its binary data. Inside the binary data, there will be trace of the name of the device that this registry key represents.

Please post back if you have any more problems or questions.
If this information is useful, please mark as helpful. Thanks.

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