So, I'm an idiot and decided to mess around with my Macbook Air that I bought TODAY. It all started because I decided I might as well use the file vault option it gave me while I was setting it up, but I had the same problem so many others have had, where it just continued to say that encryption was paused, whether I had it plugged in or not. I tried doing everything I could think of and it never changed. I read some forum post about going to disk utility and repairing your hard drive or wiping it and reinstalling OS X Yosemite so I fooled around with that a bit and it still didn't work. Finally I tried erasing something because I had read it and I obviously did not have a clue what I was doing and accidentally erased the "Macintosh HD" tab that was the encrypted tab (or whatever it is) that is indented below the very top Macintosh HD tab on the disc utility screen. Since I did that, my mac won't go to it's log in screen, it just goes directly back to the screen with the options to reinstall Yosemite and go to Disc Utility, etc. I tried to reinstall Yosemite after this and it says to pick a drive, but the only visible drive is "Recovery HD" and it is grayed out. Sometimes it looks "clickable" but then a message says, "Cannot be installed on Recovery HD". I also have no options under start up disc... I am so irritated with myself, and I'm really hoping someone here can help, because everyone seems so knowledgable! I also have NO time to get to the apple store because I work all day and need this laptop to work... what a disaster. Anyways, any advice would be greatly appreciated!