I don't know what this driver even goes to, it's listed as "other devices" in the Device manager. There is a warning sign next to it. I'm running Windows 7 on an Acer Aspire Desktop E700 series. My external HD is a 1TB WD My Book Essentials ver 2.0 I don't have that connected right now. I want to find the problem so I can run a first backup image.