My Passport External Hard Drive won't show up

I've been using a My Passport external hard drive for the past two years, and it's always worked perfectly fine. All my files are on it since my Macbook Air can't fit much. But just recently, I plugged it in and the disk runs, and the LED light flashes, but it doesn't show up on my computer at all. What should I do? I don't think it's a bad cable because otherwise it wouldn't run at all.

There is also a chance that the cable may have a poor
connection, as there are several contacts inside and
the cable ends may not be making a connection. As
power to run the device may get there, data may not.
A spare known-good cable is also something to try;
be sure to follow the shutdown/restart as previously
suggested since the device may not appear correctly
should it be disconnected improperly, at any time.
A shutdown (then dis or reconnect) lessens the likeli-
hood of there being an error message, or loss of the
ability to use the external drive at all. When it doesn't
appear on the desktop at all, you have to be careful.
Good luck

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*4. A corrupted iPhoto Cache*: Trash the com.apple.iPhoto folder from HD/Users/Your Name/Library/ Caches...
*5. A corrupted preference file*: Trash the com.apple.iPhoto.plist file from the HD/Users/ Your Name / library / preferences folder. (Remember you'll need to reset your User options afterwards. These include minor settings like the window colour and so on. Note: If you've moved your library you'll need to point iPhoto at it again.)
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Hold down the option (or alt) key key and launch iPhoto. From the resulting menu select 'Create Library'
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Regards
TD

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Hello Everyone,
I am hoping that one of you fine mac experts may be able to assist ~
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~
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~
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My other thought was to take the external HD there and have them try to recover the files.
Make sure you completely understand the costs involved. File recovery using a service like DriveSavers can run into many hundreds of dollars. They are prepared to disassemble your drive in a clean room and replace controller boards and read/write heads to achieve success. Your drive has serious, but not fatal, Directory damage. The Hardware, and most of your files, are likely just fine.

My Passport External Hard Drive won't show up

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