External hard drive gone!!

Don't know if it's the right forum to post, but anyway:
I pluged in my external harddrive (Western Digital 2TB),but suddenly i could read the files, but i couldn't open them! So I tried to remove the disk usig disk utilities but it couldn't. And after a few tries i turned of my computer and removed it. I started it up again and pluged in the disk and got the error-mesage "The computer couldn't read the disk". I looked in disk utilities and didn't see the partion. Everything was gone!! 500 gb of more or less important stuff!! The most important things I have an copy of on my internal disk, but i need the partion back!!! It was fine yesterday... Please help me!!!

If it's port powered use a powered USB hub
Try it on another computer, if it's a NTFS drive, update your software to read/write that format
Other than that, if the drive is not being seen, not much we can do, it or it's cable, or is likely dead.
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tt2

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External hard drive gone!!

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