External hard disk problem

i have a 320 gb western digital external hard disk...it worked properly for 1 year..but now when i connect it to the computer i cannot find it in 'my computer'..but it is being displayed in the task bar for removing the hard ware safely. when i connect it i can hear the spinning sound like everytime ...plzzz anyone help mee...
 
Try this see [post=875300]How to Cleanup and Remove old USB Storage Drivers[/post].

Also does the drive have its own AC power? if yes also try
> Power down machine. unplug usb cable. Turn off external drive

Turn on computer. Replug USB cable and then turn drive power back on
 
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