On Apr 18, 2004, at 6:43 AM, PowerBook G4 Titanium List wrote: > I know I've tried everything but nothing works. It will have to go to > the shop I guess. Don't do anything for few days. My Ti 500 died several time for few hours or days without explanation. I never found the problem. All I knew was that I could get it started from another disc such as DiskWarrior and repair the HD. There was no problem with the HD. The only thing I noticed was more heat in the right upper corner where the power plug is. Occasionally, but not always, the Ti came back to life after cooling off. I gave up on my three year old Ti500 several times but it always came back. Last time it died was five months ago and came back after Three days. When I took it to the geniuses they didn't know what was wrong and gave me $800 estimate. I guess it's electrical supply problem. Let's say the Ti500 is fragile. This is just my observation and anecdote. Milan