The whole thing just freezes and the screen goes dark. I have to disconnect the ac and pop the battery, then sometimes it will restart, sometimes it will start to reboot and do the same thing just go blank.
The one thing I have noticed is that the connector plug on the ac line is very hot to the touch when I remove it. What I am really looking for is a disassembly diagram. I have some electronics experience but thinking this is probably a internal power supply problem. I have another ac adapter and it is the same result with it.
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It sounds like a fault to its power transition section circuit. Actually, this circuit is built inside the mother board to your laptop.
Please contact the authorized service center, and describe and show them the problem you do experience now, with your laptop. It can be rectified. Gopakumar Gopalan Google
It could be a number of things. Here are my ideas, in order of probability:
It could be a faulty power supply. If your power supply goes bad then your components wont get enough power to fully turn on, and the whole thing shuts down when it tries.
Sometimes shutting down like this indicates an overheat. It is possible
the heat-sink that connects to your processor has lost its connection
and needs to have its paste reapplied. If you leave it completely
unplugged for a couple hours before trying to boot, and it takes longer
to shut down, this could be your problem.
The motherboard could be at fault, though that's the least likely. It is possible, however, to have components on your board melt from overheating and cause a bad connection somewhere.
Whatever the cause, you will likely need to bring this in to a shop that can physically test each component for you, to see where the problem lies. Unfortunately it's just too hard to tell what's wrong with it without being able to test it.
same thing happens to me - most of the time it will just randomly freeze; occasionally i get an unresponsive black screen. this 24' aluminum imac usually has startup problems also - sometimes it will "gong" and nothing else; sometimes the apple logo will come up and then nothing else; sometimes it will load the logo and then spin for a few seconds and then freeze - the only option is to manually shut down. there is no rhyme or reason to it
I dont thing this is a virus problem but a heat problem. if you dont mind getting inside the box see how clean it is and put your hand on the power box case .. then unplug all the hardware except the mother board then turn the unit on, if it goes on then plug 1 hardware at a time.
Not a hard drive issue I'm afraid. Sounds like they switched the whole system out.
So you disassembled the laptop and put it back together?
That's more than most of these guys can do.
You've got a loose lcd cable, or memory is going bad, or there's a short in the case-palm rest area.
All these are common with this model.