You can search for and install new Western Digital drivers using the Device Manager utility within Windows. Follow these steps to do so:
Right-click Start and select Device Manager.
Expand Disk drives. Right-click your WD hard drive and select Properties.
Click the Driver tab, then click Update Driver.
Click Search automatically for drivers. If Windows finds up-to-date drivers, it will inform you and install them. Alternatively, you can continue your search by clicking Search for updated drivers on Windows Update if nothing is found.