Since it is a WD drive, do you have the drive alone on a ribbon cable? If so, you need to remove all the jumpers and place it on the end connector of the ribbon cable. Also, make sure it is an 80 connector cable and not one of the old 40 connector cables.
Note: If there is another drive on there, then you need to have the WD jumpers set as master and have the other drive jumpers set to slave. Then, place the WD on the end connector.
Note: If there is another drive on there, then you need to have the WD jumpers set as master and have the other drive jumpers set to slave. Then, place the WD on the end connector.