Question about Toshiba Satellite 5005-S504 Notebook

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Trying to locate the cmos battery for Toshiba Satellite L25-S121 laptop?

I wanted to reset the motherboard for the Toshiba Satellite L25-S121 laptop. I went to Toshiba's website & downloaded the manual but there's no diagram within the manual of where the cmos battery is located exactly.

By any chance would anyone know where it's located or have a website link that has a diagram of it for this Toshiba model?


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  • Anonymous Nov 25, 2007

    i upgraded memory from 256 to 2gig still system detects 856 mb ,is there any way to fix this please

  • billmurphy Nov 29, 2007

    I am selling my Toshiba 4500 Laptop.

    I removed the user icons expecting the laptop to start without having to logon.

    When I restarted the laptop, it asks for an administrators password.

    I have no idea what that password is.

    I was told: -

    Remove the CMOS jumper start the computer shut down the computer and replace the CMOS jumper.

    My next question is, where is the CMOS jumper.

    Thalk you


  • Ibrahim Bello Jul 05, 2008

    Can't identify CMOS battery

  • subramanian1 Feb 16, 2009

    hi, i have a acer 2490 lapton. I guess it's bios is corrupt and I want to flash a new bios. Before that I want to remove the bios batter. I have striped off everything, But I don't find any object like a battery. Can any one help me?



  • Anonymous Mar 13, 2014

    Where is the xmas battery located in a Toshiba satellite laptop



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I've been working on a Satellite 1415-S115, and found the CMOS battery. You will have to open up the 'clam shell' and remove all of the B25 and F6 screws from the bottom, as well as the B16 and B6 screws under the keyboard. To remove the keyboard, I had to pry up the trim piece that holds the power button and remove three screws. Be careful of the wireless wire leads, as you'll be tempted rip them out!

The CMOS battery will be under the right side of the hand rest, next to the mouse. It has two leads and the battery is in a blue 'bag'.

Posted on Nov 28, 2007

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On the Toshiba Satellite L25 S1217 Laptop, the battery is indeed to the left of the wifi card. I was having a problem with a bios password and had spent a considerable amount of time looking. However Instead of taking the whole laptop apart, I removed the wireless card and used a precision flathead to maneuver the connector out of it's socket. after a few seconds I booted the laptop, with the battery still disconnected , and no password prompt! using the same screw driver, I was able to get the connector back into it's socket, and put the wireless card back in. it runs fine now. the trick is to only pull the connector out only enough so that it's not making the connection, if you pull it too far you will have a tougher time guiding it back into the socket. I hope this helps a lot of people with the same problem.

Posted on Apr 30, 2009

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I had problems with a Toshiba notebook equium L series, L40, PSL49E, belonging to my nephew, who created a bios password then forgot what it was. After much hunting around I found the cmos battery under the lcd screen close to the usb socket.
I shorted out the battery with a screwdriver then switched the laptop on, problem solved.

Posted on May 02, 2009

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Yes on the L25 Toshiba the battery in under the bottom you must take all screws out and the keyboard has a screw holding it once your have remove the screws disconnect the ribbons and the screen and remove all screws that hold the plate down and you have four screws that hold the motherboard in and the wire to the wifi card remove them and you will see the battery it plug in .hope this will help

Posted on Apr 02, 2009

  • nilesh2213
    nilesh2213 Sep 25, 2012



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While I'm not familiar with this model, this got my curiosity up and I spent quite a while researching this on the web. I did find that this question is being asked over and over but haven't seen any answers, yet. Toshiba is obviously very closed mouthed about this issue. They will be glad to take a couple of hundred dollars from you to fix this issue.
Haven't been able to even confirm whether or not this model even has a cmos battery. With some of the newer systems, the "battery" is actually in the cmos chip, itself. It's not on the motherboard, but you know that already. Cmos batteries can be "hidden" behind memory chips, under keyboards, behind labels or tape, inside of main battery compartments,under hard drives or cd drives.
The best that I can offer is that you look at all of the cables that are on the motherboard. Follow any that have only 2 conductors and see where they go.
If you do happen to find the location of it, I'd sure appreciate it if you could get that information back to me.
Thanks for the challenge and best of luck!

Posted on Nov 08, 2007

Toshiba a215-s7416 removed blue cased battery still not fixed. . .

think I'm missing a jumper but where

Posted on Apr 26, 2008

  • mshockey22 Sep 17, 2010

    This may be a little late for this, but I just had this exact problem with a Toshiba Satellite T25-S1194. I pulled the CMOS battery and turned it on and the password was still needed. I then left the computer unplugged with both the main battery and CMOS battery unplugged overnight and it was working in the morning. It just takes some time for the power to drain from the board. Hope this helps some people out there.

  • pradipelectr
    pradipelectr Apr 13, 2013



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Posted on Jan 02, 2017

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Hoe to you reset the Bios. it shows it needs a password but no one put one in. I have it apart but don't see and way to clear the bios

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If unsuccessful or unable to find the cmos battery. The Bios password may have to be reset through the manufacture.

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and then it should work hopefully

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