Upgrade El Capitan
Hi. I have Mac Pro 2008. Today I tried to upgrade my system Yosemite 10.10.5 to new El Capitan. After restart my computer installation crashed. When I was trying start my system, on the display backround was something like code. Then system restarted many times, again and again, and installation doesn 't continue. Then I tried boot the system using recovery 10.11 (it was a second option on start up while holding alt during boot). Recovery process stopped at 80% and froze. I can 't install back Yosemite and El Capitan does 't work. What can I do?
Mac Pro (Early 2008), OS X Yosemite (10.10.5)