My Lacie Hard Drive is no longer being recognized by my MacBook, please help.

Hi all,
I have a Lacie external hard drive (LaCie Rugged XL eSATA 3Gb/s | USB 2.0) that I have been using on my MacBook (timemachine) (late 2008, 2.4 GHz Intel Core 2 Duo with OS X 10.9.1). One day it stopped being recognized, not showing up on the desk top, the disk utility program, etc.
I Googled many articles, blogs and support communities but have yet to find any solution. I also went to the Lacie support site and followed the trouble shooting instructions - changed my power source, usb cable, and tried the drive out on 3 different computers. The results: The drive works fine on the other computers (OS X and Windows) using the same power and usb cords. So Lacie recommened I contact Apple but my MacBook is not under warranty so I have decided to try my luck with the Apple Support Community. If any one has had this problem or knows the solution, please let me know. I would like to continue to use my MacBook with this Lacie hard drive.
Thanks

Hi Dibenkorn,
Yes, both USB ports are not recognizing this lacie external hard drive. I also tried the SMC reset but that did not change anything. I have another external hard drive (smaller one) and it works on this computer fine and like I said before the Lacie works fine on my other (older) MacBook. I just can not figure out what went wrong or what happened...

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