TS3824: iMac (Mid 2011): Unresponsive white screen on startup or vertical lines on screen
Learn about iMac (Mid 2011): Unresponsive white screen on startup or vertical lines on screen
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All replies
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Helpful answers
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Jun 1, 2012 3:49 AM in response to surfonmtnby Carolyn Samit,Hi ..
If you have v10.7 Lion installed, use Lion Recovery to repair the startup disk if necessary, or reinstall the Mac OS X.
If you are running a prior Mac OS X, boot from your install disc, run Disk Utility. The startup disk may need repairing > Using Disk Utility to verify or repair disks
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