Hello everyone, Basically my WD external makes a clicking sound when plugged into my system and prevents the system from booting up altogether. When I unplug the drive from USB, my computer boots up fine (mostly). It almost seems as if the external drive is not getting enough 'juice' to boot up completely but my new system with 650w PS does not include any power-draining peripherals. Is it possible that my external is corrupt? Does the clicking always indicate failure? Could it indicate lack of power? ALSO, the room in which I have the drive in tends to see a fair amount of dust plenty of which has made its way onto (and into) the MyBook casing. Is it possible for dust to get inside the casing and ruin the drive? Thanks for any input.