1184 Views 4 Replies Latest reply: Sep 7, 2008 8:30 AM by The hatter
I would begin with Apple Hardware Test and resetting the SMC, then unplug and remove every cable and device except to use monitor, keyboard and mouse.
Repair your system disk and backup. Even try with a fresh system, erase the hard drive (not just the system partition) is usually one and only way to rule out software.
I would at least delete the /Library and /System/Library /Caches folders.
Try with a Safe Boot which doesn't load every extension or process but if it doesn't happen often enough isn't acceptable.
Monitor the system with Activity Monitor, temperatures (iStatPro). System Profile has information about memory, access to logs.
If your UPS battery is aging or is under 1200VA, that might.
I’ll try some of that immediately (reset the SMC, Hardware test, deleting some of the caches), and try working with a Safe Boot some morning (recently it’s been happening regularly between 8:00 and 8:30). I’ve been looking at temperatures and other stuff, but nothing strikes my eye about odd temperatures or odd activity in Activity Monitor.
If nothing else works, I’ll try an erase-disk-reinstall-system-and-software, but I’ve been through that enough times (Mac owners since 1984) to want to avoid it if at all possible. Too much software that requires me to find registration codes, needs online updates, etc.
(Though it probably would be good for me to clean out some of the stuff that I really don’t have any use for.)