Can't access drive on network

Windows 8 - Can not access drive ever since

Yes, I too can not access my My Book World Edition after starting up my PC once Windows 8 was installed.

If I turn off every device on my network (NAS drives, PC’s, Router, etc.) and then restart everything except for the Windows 8 PC the drive will work just fine.  Just as soon as I start up the Windows 8 PC the drive becomes unavailable to every other PC on the network.