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Author Topic: Sony Vaio laptop VNG-NW240F  (Read 4219 times)

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theresavil2337

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    • OS: Windows 7
    Sony Vaio laptop VNG-NW240F
    « on: April 17, 2013, 11:22:34 AM »
    I have a sony vaio laptop and it won't recover and it or repair and it keeps shutting down.

    DaveLembke



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    Re: Sony Vaio laptop VNG-NW240F
    « Reply #1 on: April 17, 2013, 02:15:09 PM »
    How long does it run before it shuts down? If you time it and its very soon after turning it on ( usually less than 30 seconds ), it could be a fan that is failing to spin and the system is protecting itself from cooking the CPU or GPU etc. If its a fan that is failing to spin, it usually always fails after so many seconds of being powered on to boot up, unless the fan is intermittent. ( Laptop Fans getting hair, food crumbs, lint, and other objects into them, cause them to fail. Hair both Animal and Human being the cause of the majority of the fans I have found not turning in which a single strand of human hair can loop around a fan blade and wrap itself tight around its spinning shaft and no longer spin. )

    If it shuts down at random times, be sure the battery has a full charge, and that the AC adapter is powering the laptop while the computer is running. If it behaves on wall power, then it might be a weak battery. To test the battery you would after a full charge disconnect the wall power from laptop and monitor the battery health. If you see it dropping in % / minutes remaining fairly quickly then you have a battery that needs to be replaced.

    Sony did have an issue with batteries failing a few years ago, some of them catching fire during failure. I am unsure as to the affected models and if your laptop was made during that battery recall period given that you have a Core 2 Duo.

    The last 2 things I can think of that will cause what may seem to be random shutdowns is that the laptop is overheating and shutting itself down when it reaches its temp limit to protect itself, or a Virus that shuts down the computer (*Note: If it is a virus, it will act like the motherboard is not detecting a fan tach pulse and will shut down at almost the exact period of time, but if less than 30 seconds its more than likely a failed fan, however if its after say *1 minute and 22 seconds and is about this duration each time it shuts down then it is possible for a virus to be triggering as part of the start up to then direct the system to shutdown. )
    * 1m 22s is just an example, not an actual period of time to relate to. The period of time between power up and shutdown of a system infected which such a virus is determinant on many factors, but generally the faster the computer, the faster the shutdown after power up, while the slower the computer the longer it will stay on before shutting itself down as directed by the virus. BUT some are designed to shutdown the system within 60 seconds to make removal a bunch of fun such as linked: http://www.pcreview.co.uk/forums/computer-shuts-down-60-seconds-t157306.html

    BUT lets not derail to malware just yet... more info is needed on this to assess the situation, and point you in the correct direction.

    Lastly is there any history to this failure, such as was it dropped 2 weeks ago and today you turn it on for the first time and it has problems etc, or has any other problems occurred prior to this failure which may be related, such as noticable shortened battery life or anything else to share with us to determine the next troubleshooting steps to suggest?