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Apple laptop will not start

My apple laptop will not start. After restarting my computer, the screen will go to my desktop momentarily, then the screen will turn completely blue and erase all of the icons and the toolbar, and prevent me from clicking anything on the desktop. Later (about a minute or two) the screen will turn blue again, and then the desktop will appear again (also with no icons or toolbar). This cycle won't stop until I turn off the computer (via the power button on the top right corner).

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Get your Mac OS disk out and restart your computer with the disk in the drive ANd while holding down the C key. This will start the computer on the OS disk system.
Once you get to the desktop, look for the top menu and launch Disk Utility. Run a repair and see if you get any indications that it found anything out of the ordinary.
Then restart as normal.
If it still doesn't work, I would recommend reinstalling the system software.

Posted on Jun 05, 2010

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