Sounds more like your fan is dead and it's overheating. My Macbook did the same thing. On Fri, Mar 16, 2012 at 5:30 AM, <COCCORP at aol.com> wrote: > > In a message dated 3/16/12 5:37:01 AM, johnf4 at mac.com writes: > > > I use computer from power line all the time. > > > Why? What is the condition of your battery? > > If your battery is dead, or mising, any interruption in power (via a bad > power cord or maybe a compromised dc-in jack) could be causing your issue. > > > Craig W. > The Texas’Dawg, > > COC Enterprises > PC/Mac Computer Repair, Network Solutions, > Drive Recoveries & Virus Elimination > Specializing in Legal IT Needs > > (678) 773-4062 GA > (713) 294-3504 TX > (904) 607-1224 FL > > _______________________________________________ > iBook mailing list > iBook at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/ibook