If an error message appears informing you that the drive is write-protected click "Start." Type "regedit" into the search box. Hit "Enter" to open Registry Editor.
Expand the "HKEY_LOCAL_MACHINE," "SYSTEM," "CurrentControlSet" and "Control" keys.
Click "StorageDevicePolicies." Double-click "WriteProtect" from the right pane. Change the "Value Data" field to "0."
Click "OK" to modify the DWORD value. Remove the USB drive from the computer. Wait five seconds, then reinsert the drive into the USB port.
This works Sometimes ^