This is Ravi. I have Acer Aspire Laptop and the middle portion on the bottom of the laptop heats up super bad. I opened it up to find that its a silver box like thing with slots in between. Is that the heat sink? How can I remedy the problem. The CPU temp when CPU intensive work is going on is in the range of 55 to 65 C. The CPU is not as hot as the heat sink though. Any suggestions/help is much appreciated.
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When the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make surethe vents are clear and dust free. Use a small brush and can of compressed airto do this.
uninstall your flash player ,,, and download a fresh copy from the adobe site ,,, if the problem persists check out the cpu fan and the heat sink ,,, clean the fan and the sink and apply some heat paste ,,,,
This is a common problem in the acer line, remove bottom and clean all the open ports and fins on the heat sink and fan. Next remove the heat sink and clean the old conductive paste off, including the processor ic with rubbing alcohol, now! apply fresh conductive thermal paste to the heat sink and ic, this will increase the heat dissipation by 50%, and check to make sure the fan is running properly, "high failure rate" this should solve your shutdown problem.
Replacing a motherboard on a notebook is generally only recommended for professional technicians. As a last resort before trashing it, it might be doable for a resonably skilled person, but finding/buying the right motherboard is another matter. Though, it might not be the case that it's the motherboard that's faulty. If you can post a more detailed description of the problem, when it occurs, and if there are any life-signs at all (HDD-lights, screen, fans et.c.) it might help getting some answers.
Your heat sink vents may be jammed up with fluff and other debris.
If you're not comfortable removing the bottom pannel and using some canned air to clean out the heat sink fins, I would take it into a repair depot and have the techs there apply a new application of heat sink compound and clean it out for you.