Ok earlier today I was on my computer burning a movie that me and my friends made onto a DVD with a trial version of Magic DVD copier. The movie was located on my external hard drive (drive K NTFS format) and my computer came up with several random write errors to drive K. I was wondering what was happening so I went into my computer to see if I can still access the drive and it said it needed to be formatted. At the time the other drive (drive L FAT32 format) was fine and my WBFS drive (drive J) as usual said it needed to be formatted. I tried restarting my computer and now it doesn't display drives J, K or L in my computer, but it still plays the sound to say it recognises something has been plugged in. This was done on a Windows XP PC. I then tried to plug it into my mum's Mac and it said it has detected a corrupted disk. Then I tried my Wii and to no prevail both USB loader GX and configurable USB loader both crashed with it plugged in. Lastly I tried my dad's Windows 7 PM and it plays the sound to recognise something has been plugged in but fails to display any disks in my computer. I also tried changing the cable which I used to connect it to my computer with the one that came with my PS3 to recharge the controllers via USB. My hard drive is a 500GB WD elements which I bought around Easter last year. Recap specs External hard drive - 500 GB WD elements with three drives WBFS, NTFS, FAT32 USB cables - First one came with the hard drive, second one came with my PS3. They both have this shape http://www.cable-trader.co.uk/images/items...A01_PS3_USB.JPG My computer - Windows XP My mum's computer - Macbook My Wii - Softmodded with cIOS rev 19 (base WAD 57) not tested with other USB's but assumes to be working fine My dad's computer - Windows 7 How do I get my computer to display the drives and let me access them again and how can I recover any lost data? Thanks in advance.