I was working on my laptop all night. When I was done I shut it down and went to bed. Whenever I got up this morning though and turned on my MacBook Pro it loaded the progress bar to 50% (as usual) and paused. I wasn't surprised it paused, but after I went to get something to eat and I came back, it was still at the boot screen with the progress bar at 50%. So I thought "I'll hard shutdown and see if it boots this time", after doing so I get the same result, this time I just thought to myself patience would be the key, so I sat and waited, and then my cursor came up on the boot screen. I can move the cursor around and about, but nothing is happening. Yes, I know Yosemite is beta, and you shouldn't install it on work machines, but I needed Xcode6-beta and that was the only way to get it. I have a lot of important files on this computer and restoring isn't going to be an option I'll be fond of.