the T410s OFF.
You should have already downloaded the
hardware Maintenance Manual for your ThinkPad model, if you have not
done so use the link below to download it now,
the Hardware Maintenance Manual (HMM) for your TP model
The links above are to the Lenovo site, if it
doesn't work, don't panic, it isn't broken, their site is shut down
daily for maintenance and at those times they display spurious
messages like the page you requested cannot be found, wait a good
while and try again.
have your HMM search the manual for "Removing and replacing a FRU" then
scroll down to System Board, follow the instructions in the
manual to remove all the other FRUs to gain access to and remove the
System Board, you only need to remove the Keyboard and lift up black
plastic to access the eeprom.
individual modules and their screws separate to make it easier to re
assemble it correctly
to access the 8 pin chip, a L08 eeprom which is located on the
top of the system board as illustrated below.
I receive many emails asking about the
GND connection, in reality it is very simple, you use some kind of a
clip so that you don't have to hold it in place, you DON'T HAVE 3 HANDS
and there are 3 connections, GND SDA and SCL, so have a clip for GND,
then you can use the 2 hands YOU DO HAVE to hold your SDA and SCL probes
Almost any large piece of metal or the
screws for the external connectors of any ThinkPad are a good GND
Anyway a picture is worth a thousand
here for pictures of GND Connections
you make the System board functional outside of it's case which
includes mounting heat sink and fan on CPU.
you have taken care of the GND connection.
push the sharp probes onto SCL SDA , this is the reason you need
2 persons, not enough hands to hold the probes and run the software.
This is not easy, you will need to have the Keyboard
[and optionally the LCD] plugged into the system board in such a way
that none touch any contacts on the system board, use paper as an
insulator to keep things from electrically shorting out, later you will
need to plug in the AC adaptor and switch ON the TP, then you will need
to hold 2 probes in place to the SCL and SDA points on the system board.
See my page on Options
for Clips and Probes including making your own probes.
This page ONLY describes how to
connect the KeyMaker Interface to the EEPROM.
The instructions on how to Recover or
clear a Supervisor password are in The "User's
Guides" click here
Assembling your TP - AFTER - you have finished.
Follow the Hardware Maintenance Manual [FRU System
Board], very carefully, double check screw type and size for each
individual module. Assemble the TP in the reverse order used to
I make no warranty that any of my
information is correct, or safe, or does or does not breach any
warranty clause, or anything else, it is up to you to decide if
you will follow all or any of the instructions to recover the
Supervisor Password from a TP. It is up to you to decide, I am not
responsible for the results or for any consequential or incidental
If you have any questions, email Joe at