How to eliminate potential problems on USB Powered Drives and keep them healthy

Please help me… i have spendt hours and hours trying to fix this problom.

I have a WD Elements External Hard Drive! 1.5 TB

The Problem, when i plug it in, NOTHING happens, no pling sound, no reaction from my computers at all! it dosent show up anywhere… i have tryed downloading new drivers, diffrent pc’s, windows xp, vista, and 7…

Nothing works!

it powers up fine, the little with light is flashing, all seems good… Just no reaction at all from my or any other computer, have tryed at least 6 diffrent.

Here’s all the info on the back:

P/N: WDBAAU0015HBK-01

S/N: [deleted]

3310B

R/N :D3C

CCCBAA

Please help me!