Sorry if this has already been posted, but I'm stuck in reboot and don't know how to get out. I left my computer to install overnight. When I came to it this afternoon, it looks like it might have completed, but was still in some set up condition, so I did a hard restart (I know probably shouldn't have done that). Well it just keeps looping through restart over and over. I've tried f4 to start in safe mode, but it would not work. Any help? Thanks in advance.