I want to install Windows 8 so I can play all the games in my Steam library but I don't know how to since I can't execute the .exe file I download from the Windows website. Is there anyway I can do this from my PC or do I have to do it from another PC? Also, is there any way I can delete Windows 8 off of my computer? I can't access it because Ubuntu says it didn't shut down properly (I did shut it down right) so can I get rid of it?