Hello, My external HD is write protected, every time I excess it no problem even the data but I cannot save and delete from it, not even format it. it is a Seagate Free agent 1TB drive, just one afternoon whilst copying to it it decided to bemoe write protected. How can I remove or rectify the problem Please?

Here are a few things that may help: 1. This can be caused by malware, are you sure your machine is clean? 2. Plug in your device, right-click Computer > Manage > Storage > Disk Management, then right-click the drive graphic of the device and select Change Drive letter, then change it to one nearer the end of the alphabet. 3. Change these registry keys but create a system restore point first, just in case you have problems. Note that the keys do not necessarily exist, so don't create them as it's probably a different issue. 3.1 Open a Run window (Windows Logo key+R), type regedit, press Enter and in the left pane navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies, double click on WriteProtect and change Value Data to 0 (zero). 3.2 Now go to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\StorageDevicePolicies, double click on WriteProtect and change Value Data to 0 (zero). 3.3 Lastly go to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\StorageDevicePolicies, double click on WriteProtect and change Value Data to 0 (zero).