I accidentally knocked by WD (1.5 TB external drive) on the side and now it refused to turn on. When the power is turned on, all the blue lights flicker momentarily and that is it. It appears as if the drive is running ( .. some sound from it), but the fun at the back does not come on. I no longer have a warrantee.

Computers & Internet - Western Digital - 500GB MyBook Office Edition 500 GB USB 2.0 Hard Drive