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Question: Mac Pro frozen on blue screen at startup

Went to start up my computer this morning and my Mac Pro continues to freeze on the blue screen during startup. I have tried to reboot several times but with same results and a spinning sundial.. I have never had troubles with this computer in the past, purchased in 2010. Any suggestions out there?

Mac Pro

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Sep 5, 2014 12:38 PM in response to albertarosebud In response to albertarosebud

OS X Mountain Lion- If you see a blue screen at startup


Most likely you will need to reinstall OS X:


Reinstall Lion, Mountain Lion, or Mavericks without erasing drive


Boot to the Recovery HD:


Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.


Repair


When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.


Reinstall Lion, Mountain Lion, or Mavericks


OS X Mavericks- Reinstall OS X

OS X Mountain Lion- Reinstall OS X

OS X Lion- Reinstall Mac OS X


Note: You will need an active Internet connection. I suggest using Ethernet

if possible because it is three times faster than wireless.

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Question marked as Helpful

Sep 5, 2014 12:38 PM in response to albertarosebud In response to albertarosebud

OS X Mountain Lion- If you see a blue screen at startup


Most likely you will need to reinstall OS X:


Reinstall Lion, Mountain Lion, or Mavericks without erasing drive


Boot to the Recovery HD:


Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.


Repair


When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.


Reinstall Lion, Mountain Lion, or Mavericks


OS X Mavericks- Reinstall OS X

OS X Mountain Lion- Reinstall OS X

OS X Lion- Reinstall Mac OS X


Note: You will need an active Internet connection. I suggest using Ethernet

if possible because it is three times faster than wireless.

Sep 5, 2014 12:38 PM

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Sep 5, 2014 6:37 PM in response to albertarosebud In response to albertarosebud

Start up in safe mode and try to log in.

Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.

Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.

Sep 5, 2014 6:37 PM

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May 24, 2015 2:15 PM in response to albertarosebud In response to albertarosebud

The problem can also be caused by drive permissions. I have seen startup drive have the permissions set incorrectly, though I am not sure how the user accomplished the change in permissions.


If Your Mac Is Stuck at the Blue Screen, You May Have Drive Permission Issues


Tom

May 24, 2015 2:15 PM

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Jun 7, 2015 6:12 AM in response to Kappy In response to Kappy

Dear Kappy ,


Thank you very kindly for your supporting 🙂 , but Actually I think that I have problem in the screen .


Because when I press the option key , its ok showing my mac HD and recovery HD . I am click on the downward pointing arrow button but its showing white screen .


Regards,

Mina

Jun 7, 2015 6:12 AM

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Question: Mac Pro frozen on blue screen at startup