Hello - This actually happened to my boss, but we have the same computer. I haven't downloaded the security update because of his problem. After he downloaded the last security update released (12-2-04), he restarted as usual. His computer shut down, but never started back up. Now every time he presses the power button, you can hear the start-up chime, but it doesn't actually restart. He has tried holding down the power button for several seconds, as well as Control-Command-Power at the same time (as the Apple site directs you to). Has anyone else had this problem with the last security update? Does anyone have any other ideas? Thanks.
Also, it's a 15" powerbook G4... latest revision, with OS 10.3. Has Apple RAM, so I don't think it's a sketchy 3rd party RAM issue...
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