Originally Posted by steves85
Click on this and it should list all of your disks. You may need to format the disk which can be done from this tool also. Google will show you what to do.
You'll need to initialize it first generally, then format it. In the disk management screen, if the disk looks to be formatted but still doesn't show up, you probably need to manually give it a drive letter.
Or is the hard drive spinning at all? Put your hand on the top of it, can you feel movement?