Not familiar with this model, but if it's powered from a USB port (instead of from the mains) it may not be getting enough "juice".
With a desktop computer you could have simply bought an additional USB card with it's own hub and ports and enough power to run
the drive. However, with a laptop that's not possible. If this drive has no input for a mains adaptor you will have to exchange it for one that does, in which case you will get the mains adaptor supplied with it. I know that arrangement will not allow the drive to be used "on the road" but I can't see any other option if lack of power is the cause of your problem.
All the external drives I've used have all come with a mains adaptor, with USB only used for data transfer.
Edited by phillip22, 27 October 2008 - 05:10 AM.