Message:
Subject: CPU temperature 93C down to 63C by a SIMPLE means
By: AndreasK (IP: 88.76.224.*)
Written on: 22-01-2008 11:44


I found a REAL and SIMPLE solution to my
HIGH-TEMPERATURE problems in Notebooks:

200F / 93C was reached when I really got nervous.

At first I thought, my new harddisk or even Linux
is to blame (my first Linux installation in years),
but then the same problem occured in Windows, too.

My \"test\" was simple, I compressed 4GB of files
(a copied XP installation) from an external drive
into a ZIP file on the built-in harddisk
- that heats up the harddisk AND the CPU.

The only way to lower the CPU temperature was to
decrease the CPU-speed to 25%/50% - but that also
decreased the fan-speed. Then I downloaded several
fan/CPU-manipulators, none of them was able to
decrease CPU-speed while increasing fan-speed.

When I read about someone who renewed the \"toasted\"
thermal compound between heatsink and processor,
I actually opened my notebook (after switching OFF!!!),
and tryed to unscrew everything. Fortunately, one screw
refused! I would have broken the waranty seal later...


Then the idea: Blow IN air!
From the outside, INTO the opened notebook bottom.

The fan started to turn with a rather beautiful sound
(turning backwards), and a HUGE amount of dust came
out. 20 months of usage pressed so much dust into the
grating, that the fan could not push out air anymore!

I repeated the above test.

63C / 145F is the maximum at which CPU temp stagnates now.

30 degrees Celsius less! The easiest \"repair\" of my life.
I guess I have just prolonged the life of my notebook.

Haaaappppyyy! I am a genius :-)

So now, please repeat this test with your (well used) notebook.
By how much can you decrease its temperature?

bye :-)
Andreas


\"normal\" temperatures:
http://www.heatsink-guide.com/content.php?content=maxtemp.shtml

Measurement programs:
http://www.softpedia.com/get/System/System-Info/Notebook-Hardware-Control.shtml
http://www.techspot.com/downloads/265-asus-pc-probe.html
http://www.google.de/search?q=temperature+cpu+fan+download

Replies:
By: daydreamer (IP: 77.103.201.*)
Written on: 16-08-2008 05:46

Thanks for your information. I just recently encountered the same problem. My laptop was going up to 91C and then shutting down. I thought this was due to the laptop being on a table. Then I noticed that the air intake was obstructed with dust. I cleaned out both the cover and the internal cavity for the cooling fan. A whole family of dust bunnies had set up home in the heatsink fan space.

After cleaning out this area (removing the fan first) and then cleaning the fan blades, the CPU only goes up to around 70C, and my battery life has been doubled to just over an hour.
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