One day I was restarting after booting to windows and suddenly a progress bar is in the bootup screen. I do not know why this happened and it takes really long to boot. After it boots in, a login screen apears and I didn't even set that option before. Now every time I boot into osx, the progress bar appears. No it's not a firmware update because it happens every time I boot. I tried to repair my disk and it said there was a problem every time. So anyone know how to fix this problem?