Seagate Freeagent Software My Windows Vista Is Not Recognizing My Seagate Freeagent External Hard Drive.?

My Windows Vista is not recognizing my Seagate Freeagent External hard drive.? - seagate freeagent software

This is a 250GB hard disk with the software loaded on them, no CD comes with it. Windows Vista should recognize that does not work after about 2 minutes, but. I have tried to turn off my computer and unplug the device, but that does not work. There was also a co computer manual to see whether the device for at least show up there, but he did not. If someone has an idea what to do next?