Member Since: Oct 01, 2007
Mac Specs: 27" iMac i7 (2011) 10.10, iPhone6, iPad Air 2, AppleTV2
01-27-2012, 08:30 AM
It could be that the OSX install is corrupt but . . first things first.
Try resetting the SMC
Intel-based Macs: Resetting the System Management Controller (SMC)
and the PRAM
In Safe-mode have you used Disk Utility to repair your permissions and verify the disk ?
External hard disk acquisition addict - but admitting the problem is the first step to a robust backup
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