Question about IBM ThinkPad R40 2722 Notebook

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I have a r40 ibm laptop problem is date & time error i replaced cmos battery update bios but still problem now

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Just reverse the negative and the positive on the bios battery have fun ...youre welcome. no ac adapter needed you can keep it on your laptop battery and not worry about the cmos battery dying

Posted on Jul 02, 2011

  • allpcsolutio Jul 02, 2011

    just reverse the positive and negative on the cmos battery this will allow you to...not purchase a new mobo you're welcome

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Assuming that you used the correct battery go ahead and unplug and replug the cmos batter back into its connector.

Go into the BIOS and set the date and time properly. Then unplug the battery and save the changes and exit.

See if the message comes back, if it doesn't then your good to go. If the message still comes back then the motheroard isn't keeping memeory at all.

Go ahead and shut off the machine for about 15 minutes. Then only plug the ac adapter up and hopefully the message stays away. If it does then that means the battery is good and your motherboard is good as well.

if you leave it off and then turn the laptop on and that error message comes back then you need to change out the motherboard.

Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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As soon as anything appears on screen after power-on, press F1 (keep clicking it until the BIOS setup screen appears). The first option on the list is Date + Time, click on that, and enter correct date/time. Then press F10 to accept + reboot. If this error happens again, it means that the CMOS battery (which keeps your settings alive) has died; it is cheap + easy to replace, however you have an R40 model, and I avoid working on Rxx series so that job may be harder. I could point you to the R40 service manual, which is very good to dis-assemble that laptop (it is necessary to lift keyboard to get to CMOS battery, which involves removing some screws from the bottom.

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Hi,

The error means that you have to change the BIOS battery first before trying to change the date and time.
As far as i know with IBM's the CMOS (RTC) battery is located under one of the panels underneath the laptop and is usually covered with red, blue or yellow plastic with wires coming from it. Disconnect the battery and replace it

Once the CMOS battery is replaced you can set the date and time and no more error messages.


Regards.

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Right-click the time in the lower right, select: adjust date and time, select: internet time, select either source, select: apply (if high lighted)--otherwise close. You need to be connected to the internet for the internet time to work.

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Replace the backup battery and run BIOS Setup Utility to reset the time and date. This will resolve the issue.

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The 161 CMOS error means the CMOS/BIOS battery is dead/flat and needs to be replaced.
The 163 CMOS error means the Date and Time could not be updated when you change the Date and Time setting. This is caused by the flat CMOS/BIOS battery.
When you replace the battery with a new one, the BIOS will go back to the default settings, go into to BIOS setting (press F2 when you boot up) and change the Date and Time, then save and exit.

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your cmos cell is not givce proper volt so you need to change cmos cell.
It is on the motherbord .
It gives voltage to bios memory .
So you need to change it.

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4 Answers

My R40 Thinkpad loses the system date & time after being shut down for a while. However it does not lose it if only shut down for a few minutes. Any ideas please?


you need to change your cmos cell on motherbord circuit for that open back side cover and then you can see cmos cell on motherbord circuit.Change it pur chase new cmos cell.
Your old cmos cell has not enough waltage so your bios settings are not saved when you turn off the power.

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My ibm thinkpad r40e is asking for CMOS password what to do


You will have to enter the bios and reset the date and time, but you might need a new cmos battery.

Re the cmos password, you should remove it, but will have to know what it is. This can also be done while you are in the bios.

Mar 14, 2009 | IBM ThinkPad R40 2722 Notebook

2 Answers

Cmos password for ibm r40


You will have to remember it. IBM puts a security chip on the motherboard, the bios password is burned into this, and there is no way around it. There are a few places that will replace the chip, but they are very expensive. The only other way is to replace the motherboard. I've found that replacing the motherboard is cheaper than having the chip replaced, so, if possible, remember the password.

Jun 30, 2008 | IBM ThinkPad R40 2722 Notebook

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1) This is a typical problem when the CMOS battery is very weak or dead, it will continually display the date and time and reboot with the same errors until you change the CMOS battery. On this model it is behind the door that houses the memory chip, above the battery, if you have the laptop turned over and battery closest to you. <--best bet, its a dead CMOS battery.

2) You can get to the BIOS to run tests, one of 2 ways, either hit the ESC key and other keys to get a 301 error or hold the F1 key and boot, you should get into BIOS. (You probably won't be able to do this until you replace the CMOS battery.) From there you can run diagnostic tests on various components.

3) Lastly, you can update the BIOS. From inside the EASY-SETUP bios you should be able to copy the BIOS part number, date, etc. Look for the BIOS update based upon model # either thru a search on the web or directly on the IBM website (a search on google of "bios update thinkpad 380ed" will bring up a link for the IBM page.) If you choose to do a BIOS update, read the directions carefully and remember not to power off the machine while the update is happening. If you've never updated a BIOS before, get someone who has to walk you thru it before attempting it by yourself.

GOOD LUCK :)

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