MacPro G5 White screen on startup. Can't get past this.
It will not boot from the System install DVD either. Tired stuff like zapping PRAM etc.... any ideas?
This is the "Approved method" of the things you should do:
Mac OS X: Gray screen appears during startup
• Disconnect, test peripheral devices and network cables
• Perform a Safe Boot
• Reset the NVRAM / PRAM
• Start from your Mac OS X Install disc; use Disk Utility
• Check your cables and power source
• Remove third-party RAM and internal hardware
• Perform an Erase and Install installation of Mac OS X as a last resort
• Additional Information
If the issue persists after you follow the above steps, you may wish to make an appointment with a Mac Genius at an Apple store, contact AppleCare via phone, or contact an Apple Authorized Service Provider for assistance.
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HT2452 White screen at startup and stays?? How can I get past this?
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If the Mac eventually starts, take that opportunity to back up your important data if you have not already done so. It may be your last. -
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Hold down the home and lock buttons until you see an Apple Logo, then release the buttons.
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Try resetting it by holding the power and home buttons at the same time until you see the Apple logo, then releasing. You won't lose any data by doing this.
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Force iPad into Recovery Mode. Follow step 1 to 6 very closely.
http://support.apple.com/kb/HT1808
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READ the article from which the statement was posted and follow the instructions provided.
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http://docs.info.apple.com/article.html?artnum=107392 Takes a while to run, but it usually "fixes" problems.
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http://docs.info.apple.com/article.html?artnum=106214
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