Mac Pro stuck on white loading screen I have Mac Pro which is running 10.8.5
After I turn on the Mac, I can see the regular apple logo, but after it's disappear, I see white screen (whiter than before) and a loading wheel for a few seconds, and it's disappear for 3-4 seconds and come back again.
And It's continue like that forever.
I suspect that start to happen after tried to attach my second monitor to my graphics card at the mini display port. 

Things that I've tried so far:
Safe Boot - can't reach to it.
Reset PRAM - same results.
Running fsck –fy at single-user mode - same results.
Repair Disk - same results.
Repair Permissions - not clickable.
Reinstall Mac OS X - I get an error message "this item is temporarily unavailable"  

Is there anything left for me to do?
I really hope that I won't have to reinstall everything from scratch, because I have a lot of stuff that I need on my SSD (the one which is running the OS X).
How did you repair your disk? I did it through command line and it helped. This topic might help.