I was reading an article online when everything was replaced with a blue screen. I shut the book down and tried to restart several times getting stuck with just a white screen. I figured there was corrupt file within the startup menu so I replaced my hard drive with my backup. Now the book just continually restarts. It boots pass the Apple logo, hangs for a few seconds with the fans spinning high then shuts down and starts the process all over again. Any ideas what’s causing this?