How about this for a FIX! I unistalled all drivers (not sure if you need this or not) but NOT touching it! AND Plug the power adapter directly into the wall! Why NO CLUE, but i read if you plug your adapter directly into the wall your performance gets better, I was Always using a power strip, But tried it and my drive is not READONLY and it appears to work.
IF ITS NOT BROKE, DON"T FIX IT!