Hi,
I have a 1TB used external HD that I purchased online. It was already on its way out, but i was hopeing it would last a year before it died. In any even, that was a few months ago, and it's been slowly going, but nothing drastic - just slow sometimes, and clicking. But, then yesterday it got a bit of a beating

, and now it looks different at start-up; it has symbols [question marks] (instead of a line border) surrounding the options for booting (Linux, Linus recovery, memory test, memory test serial). And nothing works except the memory tests, which do nothing for booting the computer up. - I try the first two (above the memory tests) and they either give me the error set the looks something like this: "error: out of disk (repeat multiple times) stack overflow detected!" (something something), and the second time it says something like "couldn't read file, initial ramdisk, you need to load kernel first", or they loop back around the the menu page.
I have a Bootmed CD that I've tried to use, but it doesn't see the external HD, so I cant use it to extract the files or fix anything else to do with it. What do I do to fix this problem :'( ? I'm writing a book and have my minecraft game and worlds on there

. I can't buy anything, so if it requires purchasing something, then let me know, if if there are other options that I dont have to purchase, that would be prefered so I can start using my computer ASAP. thanks~!
Please change topic name: "Fix External HD with Linux OS Installed, or Recover it's data; HD possibly partially broken."