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Ashik, Mac Technician
Category: Mac
Satisfied Customers: 11062
Experience:  Bachelor of Computer Application (BCA), 9+ Years of Experience in troubleshooting Macs, iPhone, iPad, iPod etc
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My mac book pro ,osx 10.6 , the screen is Argyle or checkered

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My mac book pro ,osx 10.6 , the screen is "Argyle" or checkered & it won't boot all the way up ?? HELP ?
Hi My name isXXXXX hope i can help you.

Please follow the steps below and see if that works or not...

Reset PRAM and NVRAM (Solution 1)
  1. Shut down your Mac
  2. Locate the following keys on the keyboard: Command, Option, P, and R.
  3. Turn on the computer.
  4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and before the chime sound.
  5. Hold the keys down until the computer restarts and you hear the startup sound for three times.
  6. Release the keys.

Restart in Safe mode
(Solution 2)
Make sure that the computer is shut down. Press the power button. Immediately after you hear the startup tone, press and hold the Shift key. Release the Shift key when you see the gray Apple and progress indicator. Let the Mac boot up...

Run Disk Utility in Single User Mode(Solution 3)
Turn your Mac off. Turn it back on and this time hold down the Command (Apple) key and the S keys at the same time. Then type the following command...

/sbin/fsck -fy (note the space between fsck and -fy)

If you can't run /sbin/fsck - fy then type only fsk - fy

Hit return and the disk utility should run and let it finish. When it finishes and there is no error, then type reboot and hit return. Let the Mac boot up.

Let me know if that didn't worked..

Best Regards,
Customer: replied 6 years ago.
I just needed to be patient !! I can log on in "safe boot mode" what then ??
Run Disk Utility and see if it found any errors.
Customer: replied 6 years ago.
repair disk is unavailable , verify disk says everything appears OK. Should I restart??
Customer: replied 6 years ago.
Thank you very much, but, if Disk Utility said everything was ok , What happened ?? and what can I do to prevent it in the future ??
Your System Files were corrupted and Disk Utility fixed it. If it happens again, run Disk Utility and that should fix the problem.

Best Regards,
Ashik and 2 other Mac Specialists are ready to help you