I'm running into a problem with a windows 7 laptop. I boot it up, but can't get to the login screen. Repair does not work. Booting in safe mode does not work. Booting from the CD/DVD drive does not work. I'm thinking I need to reformat the hard disk, but I cannot figure out how to be able to do that without being able to get into the computer and the disk management utility. Any help is greatly appreciated.