Hi. Long time lurker. Need some emergency help. I quit all running apps and downloaded the update. Clicked reboot and the computer closed the dock and everything else, just my wallpaper remained. I stared for 10 minutes hoping it was doing something. Put my ear to the place where the hd should be and didn't hear any read/write access so I forced the machine to shutdown. On reboot it now goes straight to setup assistant. After going through the steps and clicking Done it just brings me right back to the beginning of the setup wizard. What should my next course of action be? Thanks!