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Please make sure the drive is actually not being used by any program or no operation is going on which involves the drive. If all is fine then we can try to reinstall the USB controllers and see if it makes any difference:

First, please disconnect all USB devices and then perform the following steps:

1. Click "Start" button, type “devmgmt.msc” (without quotation marks) in the “Search” bar and press "Enter". Click “Continue” if necessary.
2. In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".
3. Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".

Then, restart your computer and Windows 7 will reinstall all USB controllers automatically. Also check if there is any firmware update for your drive. Try another USB disk and see if you get error in all those drives.



Here’s to Good Karma