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Toshiba M400 Battery 100% but when power disconnetced shuts down

I have a Toshiba M400 running VISTA

The Batty is reporting 100% Charge and the yellow charge light comes on when I unplug and replug in the battery. Then it turns off.

If I disconnect the mains power the system turns off. Crash.

Could the battery be at fault or the motherboard or Power management driver?

What tests can I run?

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  • Anton Snadoks May 14, 2009

    Thanks I am aware of that. I guess i need to borrow a battery that I know works first and see if that solves my problem.

  • Anton Snadoks May 14, 2009

    The computer boots and runs OK on mains. before i updated to VISTA the battery charge light would show it charging and then trun Green. Now the battery light just turns off. If I unplug battery and replug the battery light comes on for a while and then 2 minutes later the Battery light will turn off.

  • Frank Zhang
    Frank Zhang May 11, 2010

    how long the battery used?

  • Frank Zhang
    Frank Zhang May 11, 2010

    how ling the nattery used?

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  • Master
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Hi I am Vortash .. firstly take the battery out entirely then put your adapter in and boot up if the charge light is off you can safely assume the computer is fine .. batteries have a shelf life and an internal memory , they tend to do strange and wonderful things when they reach old age lol one of them is telling lies it says it's full when it's empty .. you will probably find a cheap replacement on Ebay or Amazon and I think you will find that will cure your problem .In the event the first test was a bust and on your computer the charge light still came on .. then you should take it to a service department for a free estimate they will tell you whats wrong and if you don't get it repaired there you can ask on here how to repair it ?. regards vortash

Posted on May 14, 2009

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