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Acer Extensa 5420 is overheating, How do I stop it? Answered

When my comp is on a flat surface, i.e. table, it overheats, when the vent is exposed and well, not touching anything, just hanging, it over heats, in fact I tried this question many times, but it overheated while typing, How do I fix?


If you wanted to take really drastic measures, you could open it up and re-apply your thermal paste (I recommended AC5, or, if you're clumsy, Ceramique thermal paste). It's also possible a cooling fan (or fans) has died, so you may have to replace it. Also, as Lemonie says, you should clean out the cooling system with an air duster or an air compressor.


7 years ago

I just fixed one yesterday. My uncle brought it over because he went and bought a new one, said this one was shutting down constantly. I saw that this was true, I was installing windows and the thing would just shutoff (usually does this due to overheating, or a bad power supply or motherboard). Did a quick search and diagnosed it to be overheating. Took off some very tiny screws and took the back panel off where you can see mem, HD, cpu, etc. I took off the heat sink/collector (long copper strip and chrome looking metal held on by ~5 screws). Sure enough, the thermal paste connecting it to the CPU was old, dry, ruptured. I removed the thermal paste completely from the top of the chip using my thumbnail and a fine cloth. The chip looked clean under that. Also I took the time to take the fan off and clean the dust out of the heatsink and vents (2-3 screws) with a shopvac. I got $4 generic thermal paste from the computer surplus store by my house. I then applied the thermal paste liberally to the top of the CPU and chipset, and carefully reattached the heat sink to the chips. Put the plate back on, and it has been running strong ever since. No more shutdowns and I have a new laptop for work! Much faster than my old pentium 3!!! =]

How long since the cooling system was cleaned? If it's full of fluff & dust it won't cool so well. L

A lot of laptop computers are designed pretty poorly imo for heat removal. A cheap solution may be lifting the body of the laptop off the table surface a half-inch or so so that air can get underneath the laptop, since the table may act as an insulator. There is also a product called a Laptop cooler that consists of a thermally conductive pad that you put your laptop on top of, and which in some cases, has an internally mounted secondary cooler that forcibly draws heat out of the pad. Search the net for "laptop cooler".