chrisshon

Q: Stuck on Apple Logo on Reboot (Sometime flickers prohibitory sign)

Recently, on startup, my computer has been stuck on the grey apple logo after I input my password. There is no progress bar at the bottom. I've also noticed that the screen where I enter my password is now a light gray (almost) white BG (not the dark BG that I'm used to seeing).

 

The only way I can boot from my HD is by pressing option while powering up. From here, my recovery disk isn't showing and I only have one option, my HD. After I select the HD it prompts the same login screen (light grey/white BG) and after entering password a progress bar slowly fills up taking nearly 5 minutes to start up.  Additionally, I experience random restarts while loading programs.

 

I've tried:

  1. pram restart (option+cmd+p+r at startup)
    • chimes twice, I'll log in and same thing happens. Stuck on Apple logo.
  2. safe mode (shift at startup)
    • Does nothing.
  3. verbose mode (cmd+v at startup)
    • Does nothing. Black screen flashes and same issue with being stuck on Apple logo.
  4. Repair Disk Permissions
    • 1st run: Found several errors.
    • 2nd run: No errors found.
  5. Verify Disk Permissions.
    • No errors found.

 

From what I've read, it looks like a combination of recurring kernel panics and a corrupted OS. I'm thinking that I'll have to do a complete reinstall of the OS, but before I perform this and spend days installing all of my software again, I wanted to see if there was anyone out there that could help with a solution. I would hate to resort to a reinstall...

MacBook Pro, OS X Yosemite (10.10.2)

Posted on Aug 5, 2015 12:09 AM

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Q: Stuck on Apple Logo on Reboot (Sometime flickers prohibitory sign)

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