Question about Sony VAIO VGN-FJ170/B Notebook

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LAPTOP OVERHEATS AND COMPLETELY SHUTS OFF

The fan on my laptop is running consistently and loudly and after having my computer on for a while, it overheats and completely shuts off until it cools down, (and when I say hot, I mean it'll burn your hand if you touch the bottom of the computer "hot"). How do I make it stop?

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  • Yohann Lewis May 25, 2009

    I have the same problem but on a Toshiba and its really annoying once it turns off once it keeps on turning off every 10 mins and my computer has to keep started up again

  • blueextc3221
    blueextc3221 May 11, 2010

    sounds like your processor fan has quit.

    try blowing compressed air in to dislodge any lint buildup - not canned air - COMPRESSED air :D

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Have you cleaned it lately? If not that's what they sell those cans of compressed air for. With your computer off bloe the air through all of the vents you can locate to get all of tha accumulated dust that is blocking the airflow out of there!

Posted on May 25, 2009

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Remove the bottom case, clean the cooler and the heat sink. Then apply thermal grease (to the heat sink, the part that has contact with the CPU).

If none of the above work, you should try buyin new heat sinks and /or cooler.

Posted on May 25, 2009

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Get some canned air and clean that puppy. alternative for $20 you can get a laptop cooler pad. plugs into usb. any department store has them.

Posted on May 25, 2009

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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.
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I have a compaq presario f700 and it never overheated until one day i played a game on ninjakiwi.com called SAS zombie assault 2. Now when i listen to music on windows media player or watch videos on...


Insufficient information, but try this for starters:

Make sure the laptop sits on a hard surface and the fan vents are not covered/clogged.

1) Run windows only on a fully charged battery and see if it overheats
2) If not, run media player only, and look for the same

If it overheats in either step, you have a hardware/software problem.

Hardware problem could be that the fan has failed completely and needs to be replaced.

Software problem could be incorrect fan settings, although I do not think you can turn the fan OFF on a laptop.

IF the laptop overheats in Step 1, I would definitely suspect a hardware problem. In that case, run the laptop but do NOT log into windows. Go into the BIOS (check fan settings in there, if there are any).. leave it running in BIOS and see if it overheats then.

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Check that all of the air vents are left unblocked and that your fan is spinning and expelling warm/hot air. It is recommended you use your laptop on a hard flat surface to ensure some airflow under the laptop. You could try purchasing a can of compressed air and blowing it into the vents to loosen up any built up of dust and hair.
If you are skilled enough you could open the laptop up to completely clean the fans and heatsink. Whilst it is open you can remove the heatsink, clean the old thermal paste off of the CPU and GPU and apply a very thin, evenly spread layer of fresh thermal paste. Then put the machine back together.
As for the fans, download a free application called SpeedFan and read through it. It will monitor your core temperatures and it has some options for controlling fans if your hardware allows it.
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When the CPU overheats it shuts down (ie thermal overload) and won't startup until it has cooled down. This problem is caused by faulty fans (with bearing problems and may not spinning at normal speed) or the fan and heatsink assembly is clogged with dust.
Check the vents and fan and vacuum and remove the dust.

If the laptop is not placed on a flat surface there may not be enought air entering the vent on the bottom of the laptop.
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A few things you can do to improve the situation

Switch it off and get a can of compressed air meant for cleaning computers. Take it outside and with the nozzle on the can spray inside all the ventilation and cooling slots but do not poke the nozzle into any of those. That usually chases out the dust bunnies.

That in itself may help if you saw lots of gunk coming out.

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I bet that you had your laptop on all the time.
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What is the model number of your machine? Some have design flaws that make them run hot. Also dust is a great insulator. I would take the machine into a repair shop or get a can of compressed air and blow out any fan areas. A laptop cooling pad can be a good idea as well especially if you notice that the machine overheats while sitting on a desk. The noise of the fan is probalay due to the dust coating the heatsync. The fan has to run much faster to move more air to cool the system. Blowing out or having the heatsync cleaned is a good idea here!

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