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bios password
rsierra Apr-02-02 09:39 AM
Hello to all!

I am trying to find the bios password to a thinkpad. The model number is 2645-31U and it is a 600 series. I am have been searching for two days and coming up with nothing. Can someone please point me in the right direction?

Thank you



1. RE: bios password
Twinhead Apr-02-02 10:13 AM
In response to message 0
It is NOT possible to give a Password to overrule an existing one in the BIOS.
If you lost your Password, the only option is to clear the Cmos.
This is done by either a Jumper, Set it for a few seconds, Shortening two special solderplaces on the Mainboard, or remove the CR2032 Litium cel AND the main battery for more than 15 Minutes.
-!!- The device has to be cut off from whatever it is providing power COMPLETELY or damage may result!
After that, replace all batteries and enter te Setup to reinstall the time, date, system preferences and (If you wish) a new Password.


2. RE: bios password
rsierra Apr-02-02 11:15 AM
In response to message 1
Thank you! I found an application that allows me to clear the password as long as I can boot up to a disk.


3. RE: bios password
lbyard Apr-02-02 12:01 PM
In response to message 2
That's cool because I have always had to use the procedure described in Twinheadís post. Prey tell what application is it and where can one download it. Larry

4. RE: bios password
qajfat Apr-02-02 01:54 PM
In response to message 3
I had once come across a file killcmos.zip at Bootdisk.com which I understand does exactly that - reset the CMOS to factory default - I haven't used it myself! If you have trouble finding it tell me and I'll e-mail it to you - it's only 31K. Lawrence

5. RE: bios password
lbyard Apr-02-02 04:29 PM
In response to message 4
Thank you. Larry

6. RE: bios password
rsierra Apr-03-02 01:09 PM
In response to message 5
Sorry Larry!

The application is Killcmos. I thought it worked great. I was going to volunteer that information in my second post but was not sure how you would feel about it.


8. RE: bios password
lbyard Apr-03-02 03:40 PM
In response to message 6
Useful links are always welcome here. Links that are obviously nothing more than advertising by someone affiliated with a web site are not. If someone wants to advertise on my web site, info can be had by clicking Advertising in the left menu. Just my little way of trying to feed my family and pay the bills... Larry

9. RE: bios password
turve Apr-04-02 07:28 AM
In response to message 8
On a similar line, we have a (very) old IBM Thinkpad in our office, and would like to reset or get rid of the BIOS Password, as no-one remembers it, so we cannot get into the machine.

We have taken it apart, and the only part that looks like a battery is soldered on to the board.

Is there a way, without delveing back inside the machine, that we can get into it once more?

11. RE: bios password
lbyard Apr-04-02 12:14 PM
In response to message 9
>Is there a way, without delveing back inside the machine, that we can get into it once more?

Not that I am aware of.

You may be able to find a diagram of the insides of the notebook on IBMís site with some (ok, a lot of) hunting. Otherwise, if it has a + and - associated with it might be the battery, especially if it is a blue cylinder. it might also be an electrolytic capacitor. I would put a multimeter across it and see if it measures 2 - 5 volts DC (with power off and the power battery removed, of course). If it is the battery, I would attempt to follow the traces connected to it to a small circuit with a jumper that has three pins. That jumper will probably clear the CMOS when set to the other two pins for several minutes. Do not apply power with the jumper in that position. You may also want to try shorting the battery out with a screwdriver. That may damage something, but Iíve done it many times without a problem, but you will probably have to wait for the battery to recharge. Do it at your own risk. I wish they would start making motherboards that do not need a CMOS battery. Larry

13. killcmos
lbyard Apr-04-02 12:54 PM
In response to message 4
I tried killcmos. The CMOS on many motherboards can be set for a password to protect the CMOS Setup or set to protect the entire system. The utility worked on my motherboard when a password was assigned to the CMOS Setup, but not when it was assigned to the system, of course. So, it has limited value. The readme file was full of profanity, which reflects poorly on the authorís character and command of the English language, and does not instill confidence in his maturity and professionalism. End mini-review. Larry

14. RE: bios password
suzuki1 Apr-04-02 07:45 PM
In response to message 0
This might come in handy so you might want to print it and keep it in a safe place!

or read it here:



The following debug routine will clear CMOS, BIOS, Passwords, Settings, Viruses, and other items residing in the CMOS. During this process you may get returned characters which are an indication that the string has gone in, if you by chance get ERROR ensure that you have typed the line in correctly, if not retype. Ensure that you do not skip any lines, that it is ALL typed in correctly to help prevent problems. Before running this Debug routine also ensure that you have read the above disclaimer.

After typing debug you will get "-" which is were you can begin by typing A and pressing enter.

JB 103 <ENTER>
<ENTER> Note: Nothing is typed on this line
G <ENTER> By pressing G this will execute the above script, ensure you have read and agree to the above disclaimer.

Then reboot and you will get a Setup Checksum Error. Go into setup, correct all the incorrect values, time, date...

15. RE: bios password
mcmxli Jul-06-02 01:09 PM
In response to message 0

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