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i got a a big trouble in BIOS

I bought a second hand Laptop.IBM T41...but it still have to supervisor pass in this, i only have the user pass. the first time when i tried to change the pass word, i only can change the hardisk pass and power pass, the super visor pass setup already, now i want to format the computer but cannot. What should i do now...please help me
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crowisgod
Asked:
crowisgod
3 Solutions
 
Pete LongConsultantCommented:
IBM Thinkpad http://www.ja.axxs.net/unlock/

normal BIOS password recovery procedures DO NOT APPLY to an IBM Thinkpad see above
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CallandorCommented:
I like that link, too, but most people are scared away by the mention of soldering wires to the motherboard.  True hardware experts have no such fears, however.
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DoTheDEW335Commented:
Hmm, I've cleared a couple passwords by using the Clear Cmos Debug found here : http://www.techtips4u.com/kb/sw/SW00025.htm

 ***WARNING - RUNNING ANY DEBUG SCRIPT ON YOUR SYSTEM DOES HAVE THE POTENTIAL TO  DELETE ALL FILES ON YOUR SYSTEM AND / OR OTHER PROBLEMS. ***
This script has been tested both in dos and in windows.




     Here is the script:

Boot to a Windows boot disk and use the following script.
If debug can't be found on the Windows boot disk you may have to extract it. The computer will generate the text in red and you will type the text in white, where it says (ENTER) just hit the Enter key don't type the word. After the computer restarts you will receive a CMOS checksum error and will have to reset your time , date and other settings in your BIOS .

debug (ENTER)

- A <ENTER>
MOV AX,0 <ENTER>
MOV AX,CX <ENTER>
OUT 70,AL <ENTER>
MOV AX,0 <ENTER>
OUT 71,AL <ENTER>
INC CX <ENTER>
CMP CX,100 <ENTER>
JB 103 <ENTER>
INT 20 <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 warning.
Q <ENTER>


I know the color code doesn't show up here, the only thing is the - is suppose to be red (you will see it running debug will bring it to this prompt)

Use at your own risk of course.
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star57techCommented:
you cannot change the password on an IBM Thinkpad without switching out the systemboard. Simple
But here is a link that you can replace the security chip
https://www.regnow.com/softsell/nph-softsell.cgi?items=1824-514
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DoTheDEW335Commented:
I've cleared the cmos password using the method I posted, on a few occasions. But not without being able use a bootdisk (or boot cd)
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Pete LongConsultantCommented:
ThanQ
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