Question about Toshiba Satellite A75-S206 Notebook

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My Toshiba Satellite A75-s206 shuts down by itself. When I feel the bottom it's burning hot. Could this be my fan not working properly? Please help.

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  • josedomingua Mar 14, 2009

    I have the same problem, it starts shows the welcom screen of window but then shuts off. I try to reinstal windows but when go to the pint to restart it restarted then say resuming windows instalation then keeps restarting but not continue with the instalation of windows the CD is in if is not hapends the same thing. Is it easy to unscrew it and see the cooling sistem?

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I own one and just came across the best solution.  I'm assuming by shuts off, you mean it just completely blinks out in an instant without warning - this is the processor getting too hot and shutting off to protect itself.  First you will make sure the fan & heat sinks are clean and working properly, then you will enable the power management features of the processor (Toshiba's power utility does not do this).
First, of course, get the canned air and blow out all the fans and heat sinks so they can work properly.
Next, download and install the RightMark CPU Clock Utility (search google for it).  It will take a little reading up to figure out how to use it, but here's the basics: 1. Go to the "profiles" page  a. under "Profile Selection" set it to use "Performance on Demand" for both AC power and battery (current and startup).  b. Then hit the "Defaults" button at the bottom, and then hit "Apply" 2. Now, expand the "profiles" tree (on the left side, there should be a little + next to it) and go to the "Performance on demand" profile and do the following: a. Click the "CPU Settings" button at the top. b. Hit "Defaults" at the bottom of the page c. For both AC power and battery, check "Use throttling", and then check all the indexes (0-7) in the list below. d. Below that, set the "target CPU usage level" to 75%. e. Hit "Apply"

If that all works properly, you should be able to go to the "Monitoring" page and watch your processor throttle up and down automatically as needed.  You should find that within a minute the fan gets a lot quieter because the processor is so much cooler.  Now that it's running properly, you can open the "Settings" page and check the boxes "start minimized to system tray" and "Run at windows startup", now it will run completely automatically, you won't even notice it except the fans will be quieter and your battery will last longer.
What it does: this laptop uses a Pentium4 processor, and by default WindowsXP does not manage the processor power settings on "desktop" processors.  Toshiba's power utility also does not manage these settings very well, so your processor is always running near full power no matter if it's playing a video game or just editing a text document.  The RightMark utility automatically adjusts the processor's clock speed, operating voltage, and throttle according to how much speed you need at any given moment.

Posted on Apr 08, 2009

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I am a Toshiba Laptop Tech. The A75 in notorious for over heating. The fins on the heat sink get clogged with link much like you clothes dryer. This restricts airflow which leads to overheating and ultimately the machine will shut itself down.

The Solution:
By some canned PC air and blow in into the fans from the bottom.

If you are feeling gutsy, disassemble the machine clean the fans, heat sink and apply the thermo-heat grease.

Posted on Mar 24, 2009

  • Acs42frb Mar 24, 2009

    Also, to get to the fans, it is a complete break down of the machine. It is located on the underside of the system board.

    The A75 also breaks DC Jacks like none other. How many people have had theirs replaced?


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Yes, it could be, but it could also be that your heatsink that sits on top of the processor has come loose, therfore it cannot transfer the heat to all the little blades for the fan to blow on to keep the processor cool. So, the processor overheats, making the computer shutdown automatically to prevent from destroying your processor.

This is a safety feature that most computers have, however, if your processor keeps overheating over and over, you could destroy it, so for right now, the best thing to do if you have to use your laptop is to stay away from programs that use the processor alot, like games, and video players or editors.

Posted on Mar 10, 2009

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Yes it's most likely caused by the fan (or the fan controlling algorithm on the BIOS)..
I would try and contact Toshiba if you still are under warranty and claim it is manufacturing defect.. (I actually did the same with my HP laptop)

Posted on Mar 10, 2009

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