Macbook Pro i5 no longer recognize external hard drive...

Hi folks,
I have a 2.5" Hard Disk Box Mini USB 3.0 from conceptronic.
Since yesterday my macbook no longer recognize it.
Two days ago I've used it to restore a back up. But , stupid me, I forgot to copy a couple of documents.
Those document are on my external harddrive.
But my macbook just won't recognize the external hard drive...
Someone any ideas?!

Okay, second question: How does this forum software work? According to the thread list, someone named MacWizard has replied to this thread, but I can't see it.
MacWizard, if you could email your reply to spearbrave at gmail point c0m so I can read it there, I'd appreciate it.
15" MacBook Pro C2D Mac OS X (10.4.8)

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Macbook pro no longer recognizes external hard drive

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My Macbook Pro (2013) running OS X 10.8.5 will no longer recognize my external hard drive.
The hard drive, a Maxtor OneTouch 4, is granted quite old (c. 5 years) but has been working fine with my Macbook pro since I bought it 2 years ago. It is too full to do time machine backups but I just need to get some files off of it. It doesn't appear in Finder or in Disk Utility when connected and turned on.
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Ari343 wrote:
No, the external hard drive does not show up on Disk Utility. I don't have another computer to try it on.
Perform a PRAM reset:
http://support.apple.com/kb/ht1379
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Okay, second question: How does this forum software work? According to the thread list, someone named MacWizard has replied to this thread, but I can't see it.
MacWizard, if you could email your reply to spearbrave at gmail point c0m so I can read it there, I'd appreciate it.
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Macbook Pro i5 no longer recognize external hard drive...

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