Question about Lenovo 3000 N100 Notebook

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I still need help to find diagrams to show me how to remove the cmos battery please :-)

Posted by Jay Zachary on

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IQUIT

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Generally, CMOS batteries on MOST current portables is not removable, why are you wanting to remove it? If you are trying to reset a HDD or BIOS password, removing the battery will not resolve.
Service Manual is here:
http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/42x3553_03.pdf

Posted on Jun 25, 2011

  • Jay Zachary Jun 25, 2011

    Thanks for your time in looking into this problem for me Mr.Kempf :-)

  • IQUIT Jun 26, 2011

    In the link I posted is the service manual for that system, as I had suggested, the manual confirms that the CMOS battery is not a discrete part, but is part of the system board and cannot be removed unless you are a component level soldiering technician.

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5 Related Answers

drlalitv

Lalit Varadpande

  • 488 Answers

SOURCE: removed my CMOS battery, but the BIOS settings won't disable

There are 2 ways you can reset your bios. 
1. On the motherboard there is a small watch battery. Remove this battery along with the power cable from the power supply. Hold down the power button to fully discharge the system. Wait 2-3 minutes then reinstall the battery and plug in your system. Your reset is now complete 

2. Some motherboards have a 3 pin jumper by the battery. Lets say that the jumper is on pins 2 and 3. Remove the jumper while the machine is OFF and place onto pins 1 and 2. Power on your machine for a minute. (Note: Your system will not POST). Shutdown your machine and put the jumper back to pins 2 and
3. Your reset is now complete
There might also be an option within the BIOS to "Load Defaults" if that is all you are looking to do
please see this http://www.11a.nu/software/bios-pc-bios-security-and-maintanance-toolkit/
hope it helps!

Posted on Nov 04, 2008

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aliokas

  • 211 Answers

SOURCE: I need to replace the CMOS battery in a Presario 906US Laptop

Here is service manual for Compaq Presario 900 (download parts one by one, then extract):
Part 1
Part 2
Part 3
Part 4

Posted on Mar 28, 2009

Anonymous

  • 88 Answers

SOURCE: Removing CMOS battery on ibm r50e is not solving the pass problem

Removing battery or resetting BIOS with jumper will not help. You should call IBM for support on this issue. All thinkpads have a three year warranty, with either return to base or on-site service. Since the R50e is a recent model, you should have no problem getting it serviced directly by IBM. Toll Free: 1-800-IBM-SERV (1-800-426-7378)

Posted on Jun 25, 2009

mahhek

Laxman Bisht

  • 662 Answers

SOURCE: How do I remove forgotten BIOS password?

1) You can reset BIOS to default settings by pressing <Alt><F>

2) I am not sure about the laptops, but in the Dell Desktops usually there is a reset jumper on the motherboard which is seated on 2pins out of 3, you just need to remove that jumper turn on the pc once and the turn on the pc again by reseating the jumper to its original place. You can try this with your laptop, I guess the jumper should be somewhere close to the CMOS battery.

3) Remove the battery and keep it away for atleast 30 mins. and replace it again.

NOTE: make sure while following step (3) and (4) the system should be completely turned off. Unplug the AC adapter, remove the battery and hold the power button for atleast 8 - 10 seconds.

let me know the output

Posted on Aug 29, 2009

Anonymous

  • 2600 Answers

SOURCE: acer 5610z need to locate cmos battery for bios password reset

If you have forgotten your BIOS or system password, there are no software tricks or magical gimmicks that will get the password cleared. Laptops are different in that they are designed to not work with “backdoors” etc. for security reasons. There is one true way that works most of the time and that is hardware.
The Cmos (RTC) battery that is mounted on the motherboard in most cases holds the key, if your motherboard has the battery that is connected to the motherboard by using a two wire socket that plugs into the MOBO, then here is the procedure.
On the motherboard where the battery plugs into, you will see two pins sticking straight up, these engage the plug on the battery side. These two pins have to be “shorted” and then the motherboard powered up for approx. 30 seconds, then power down the system and replace the Cmos battery and reboot. Your password problem should be cleared up. The best way to “short” the pins is get another cmos battery and cut the wires from the battery part, bare the ends and twist together, this will short the pins. Make sure you tape the connection good on the jumper you just made….don’t want to touch anything else with powered up bare wires. Below is the link to your service manual that will point everything out to you. Good luck.

http://tim.id.au/laptops/acer/aspire%205610%20travelmate%204200.pdf

Posted on Sep 24, 2009

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I need to rest password in bios


Hi,
Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. BIOS password can be removed by temporarily disconnecting/ removing the RTC/ CMOS (Coin-cell) battery from the motherboard.
Disconnect the coin-cell battery from the system board and it will reset the BIOS to its default setting and the password would be gone.
Please Refer to Page 29, 106 & 79 of the REPAIR MANUAL IBM T40 for Battery removal, keyboard removal and RTC battery removal instructions.
The Backup Battery (RTC, CMOS) is located under the keyboard. So you have to remove the keyboard to access the battery. The above Manual from IBM shows the exact method/ instructions and pictures for laptop dis-assembly for the purpose.
If you are comfortable with working inside such electronics, you can't do it yourself, or else you may seek help from local laptop service professional.


Hope it helps! Good Luck! Thanks for using Fixya!
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The battery charge light shows green, but the screen is black and no boot. How do I get to the CMOS battery? THANKS.


Hi cqs2000.

Do the following:

"To "Remove the CMOS battery form the computer!"

  • Shut-down the computer.

  • "Unplug the computer from the {Wall Out-let}.

  • Remove the Lithium battery from the "Notebook."

  • There is a compartment (underneath) the "Notebook that 'store' the CMOS battery."

  • "You will need a {very small Phillips screwdriver}.

  • paul7of9_182.jpg Remove the CMOS battery for: [30 minutes].

  • !Important: If you have to do it again?

  • Remove the CMOS battery for a {'longer amount of time'}.

paul7of9_181.jpg Replace the "CMOS battery."

  • Next, "Only plug-in the "Power Adapter" into the computer.

  • "Do not - replace the "Lithium battery!"

  • Once you have completed these 'task'.

  • "Restart the computer."

  • "Press the [F2] key, to 'enter' the CMOS / BIOS Setup!"

  • Next, 'reset' (all) "Values to the Default Settings."

  • "Press the [F10] key to 'Save' the changes!"

!Important: "Take a 'moment to rate the help', so I can get 'credit' for the work.

Thank you!" - paul7of9

Mar 15, 2011 | HP Pavilion xh485 Notebook

1 Answer

Hi i am an indian.sir my laptop toshiba model:satellite A130/A135 Series is asking for bios password.ples help me.


Hi.

If you dont remember the BIOS password, you may remove it by resetting the BIOS password.

Please follow the below steps to reset the BIOS password:

1) Please remove the bottom casing of the Notebook.
2) Once you have removed the below casing, you should be able to see a CMOS Battery.
3) The CMOS Battery will be of a size of a coin.
4) Once you have found the CMOS Battery, please remove and re-insert it again.
5) The CMOS Battery will have the information about the Computer Date, time, BIOS Password etc.,
6) Removing and re-inserting the CMOS Battery will reset these settings, which will also remove the BIOS password.

Please perform the above steps and let me know the results.

Hope this helps.

Please feel free to contact for further information and assistance.

Oct 02, 2010 | Toshiba Computers & Internet

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How to remove acertravel mate 252 bois password? i enter 3 times wrong password and i recive system disable code 12717


Hi saeedbjaan.
You may reset the BIOS password by removing and re-inserting the CMOS Battery.
The CMOS Battery will store the Computer date, time, BIOS password etc.,
Hence, removing and re-inserting the CMOS Battery will reset the BIOS password.
However, please let me know if you need detailed information to remove the CMOS Battery.
Hope this helps.
Please feel free to contact for further information and assistance.

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Power off computer - remove and then reinstall (or replace) cmos battery. This should reset cmos password.

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Please help me


Hi

Check ASROCK P4i45GV R5.0 User Manual Page 17 - http://download.asrock.com/manual/P4i45GV%20R5.0.pdf

Note: Check Page 11 for the CLRCMOS0 location on the motherboard. From the picture CLRCMOS0 is number 18. You can locate CLRCMOS0 just below the CMOS Cell Battery.

Turn off the computer and unplug the power cord, then use a jumper cap to short the pins on CLRCMOS0 for 3 seconds. Please remember to remove the jumper cap after clearing the CMOS. If you need to clear the CMOS when you just finish updating the BIOS, you must boot up the system first, and then shut it down before you do the clear-CMOS action.

Regards
Mike

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Cmos password lockout


Hi,
if this is a bios password lockout, you can try removing the CMOS Battery, for a couple of minutes to reset to factory default.
or using a password finding utility.
I have a CD that can do this, providing your DVD Drive will boot first.
Mike @ compurepair.
If you want the repair disk utilitie, please mail me for details.
**A charge will be made for supplying the disk required**

Feb 25, 2008 | Computers & Internet

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