I just started installing OS X El Capitan and the installation froze at about 80-90%(judging by the meter). So, what I did was just force shut off and tried just starting it up again. I got to the log in screen, typed in my password and a new bar appears also going to 80-90% where it just freezes. So, I thought I had to start up in recovery mode. I restarted, holding cmd + r, and what happened is I get the same apple icon and the bar at 80-90%(look at the attachment) . What can I do now?