Really Confused

I have just download Easy RE and it has helped me at all i get enter partition editor and nothing is detected? I goto to automatic repair and i am told to goto to command prompt which i press and nothing happens? Its a brand new computer to no issue with failed harddrive. I am use to Apple computers and going back to windows is an absolute nightmare in every sharp and form. I need help reinstalling windows 8 which was preinstalled on the computer.

Need to get this sorted

Many thanks