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    CMOS battery on 1905-301?

    Discussion in 'Toshiba' started by Yuengling, Feb 17, 2005.

  1. Yuengling

    Yuengling Newbie

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    Does anyone know how to find the CMOS battery on the 1905? I have had a number of problems, and in the course of "fixing" them, have managed to make my computer completely dead.

    I have read on other message sites that removing the CMOS battery will clear the bios, and want to try it. I can't find the CMOS battery though.

    On some other Toshibas, it's under the keyboard, but I removed the keyboard and didn't see it.

    Any assistance would be appreciated.
     
  2. Venombite

    Venombite Notebook Virtuoso

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    I've seen this motherboard and I don't think it has a "battery" like on the older units. I believe this uses some kind of capacitor or NVRAM that doesn't require power to keep the settings. Since you're not even capable of getting to the point of the BIOS screen (guessing), resetting the BIOS shouldn't do anything.

    What problems were you having with the system and what did you do to fix them?

    -Vb-
     
  3. Yuengling

    Yuengling Newbie

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    Thanks for the reply.

    The problems are all tied to a third party battery that I purchased several weeks ago. Everthing worked fine for 48 hours, then I got a BSD with a "Page Fault in Unpaged Area" code. I did some reading and decided that I needed to update my BiOS from v1.4 to v2.1.

    Everything worked fine for 48 hours, then I started getting BSDs with a variety of Stop codes. I pulled out the battery and just ran on AC and it worked fine for a few days. I put the battery back in and the computer locked up tight (couldn't get to BiOS).

    After I posted my first message, I turned to computer on and was amazingly able to boot off a floppy, so I flashed the BiOS again. I am running off of AC power right now.

    So now I am thinking:
    1) Does it matter whether you flash the BiOS with the battery installed?
    2) Some posts on other brands have suggested that I need to turn off all battery management options within biOS. I've done this but am a little gunshy about putting the battery back in.
     
  4. Venombite

    Venombite Notebook Virtuoso

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    When upgrading the BIOS, Toshiba asctually does recommend having the battery and AC connected in the event power goes out or you run out of battery power during the update. Getting a page fault might be related to defective memory. It's also possible that the systemboard is starting to flake out. But from the sound of things, it might be related to your 3rd party battery. This might be causing an overload of some sort (since it works without the battery). If this unit is still under warranty, you may want to send it in for service and possibly get a new systemboard while you're at it. Or you can buy an original Toshiba battery for this unit. Finally, you could just run this notebook on AC only and not have to worry about spending anymore money.

    -Vb-