I have a 500GB LG external HDD, since yesterday whenever I connect to pc it says I need to format. However when I connect to my LG Blueray player it pics up and I can access all the media. Could you please advise how I can access via PC. I'm running Win7 64bit. I have tried data recovery software but nothing works the drive is partitioned into a 400gb and 80gb, I can however see the 80gb. Any advice?