I have a Seagate Momentus 100GB hdd I was given but I am unable to use it because it prompts for a password whenever I try to boot to it. I tried hooking it up to a USB enclosure but it will not show up in my computer. It does show up in disk management but it won't let me modify anything or format it. What do I need to do to get this to work? Is there a program I can use to wipe it so I can reinstall windows? Any help is greatly appreciated.