All computers unable to see the Flash drive

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Hello,

I need a bit of help, please. Yesterday, as I was in hurry and wanted to copy something quickly, I chose a folder and pressed "Copy" in Total Commander (in Win XP). An alert popped up, something like "a folder does not exist / can't be read" and there were some options under it, so I clicked "as an administrator" (cause I thought it has to do something with rights, that the flash drive is unable to cooperate).

It wanted to me to add a name of the user, so I stayed with "Administrator" and when it wanted a password... I left it empty and pressed enter. Unfortunately I can't remember what it wrote afterwards, but it couldn't see the Flash drive anymore. As I was trying to put the Flash drive somewhere else, other computers can't detect the driver either.

Please help :(

In Win 8, where I am using it now, it seems that the "Settings" screen can see the device, but that's the only place where I can see it. Plus it's a place, where I can't do anything with that except removing the device.

BTW When I connect it or remove, the Windows sound appear. It just doesn't add an option of e.g. F:\ or something like that.

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Hello,
Try this 1
Hold the Windows key and press the R key. "Run" will be opened. Type diskmgmt.msc and press Enter.
"Disk Management" will be opened. Can you see your pen drive partition in "Disk Management"?
Good Luck
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Well, yeah, thank you, I can see it there, but when I check the properties, I can't find anything I can change that would help to make it readable and visible :(
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Hello,

Try this 1

Hold the Windows key and press the R key. "Run" will be opened. Type

diskmgmt.msc and press Enter.

"Disk Management" window will be opened. If you notice a partition without a

drive letter then right-click on it --> Select "Change Drive Letter and Paths..." -->

Click on "Add" button --> Add --> Select the drive letter --> Click on OK.

Good Luck
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The Flash drive now has a letter (G), it finally appeared in Total Commander, but it says it's not found, when I want to choose it there.
When I look for it in explorer, it's not even there (no driver with path G:\).
(no change even after restart)
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It says "no medium"
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Hello,
Try this 1
Hold the Windows key and press the R key. "Run" will be opened. Type devmgmt.msc and press Enter. "Device Manager" will be opened. Expand "Universal Serial Bus Controller" --> Right-click on "USB Mass Storage Device" --> Uninstall it --> Unplug your pen drive --> Restart your PC.
If the problem still exists then let me know the complete error message.
Good Luck