It sounds like a corruption problem. Did you try EaseUS Data Recovery http://www.easeus.com/resource/repair-raw-disk.htm It may be try and buy after you recover a set amount. Since none of the software seems to work there is something that might work I’ve seen it posted a few times. Basically you run the command prompt to convert FAT32 to NTFS. You need to run Command Prompt as an administrator here is a link http://support.microsoft.com/kb/214579 the command is about half way down I would try this as a last resort.
Joe
