I need a useers manual for an IBM T41 Thinkpad

It is difficult to remove the Power On and BIOS password because the passwords are stored on an EEPROM chip.
For instructions on how to remove these passwords go to this link.
My Thinkpad - remove Power on Password
http://www.fixya.com/support/r4335050-remove_bios_power_password_thinkpad

Google IBM T41 Manual.

PDF
http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/39t6192_01.pdf

you can visit : http://www.batteries-world.co.uk/ibm-thinkpad-t41-laptop-battery.html , http://www.power-battery.co.uk/laptop/ibm/thinkpad-t41.htm , http://www.battery-chargers.org/laptop-batteries/ibm-thinkpad-t41.htm

to find one

Hi,

The IBM Thinkpad has a very strong security system.

If you are seeing a lock symbol when booting then somebody has set the supervisor password. If you can't remember it or guess it (try "password", "admin", "pass", etc) then you need to find the person that set the supervisor password.

Once the supervisor password is set the T41 is very well protected and it can't be reset by removing the laptop battery or CMOS battery.

There is a way to read the password from the protection chip but this is very complicated and requires taking the laptop apart and building your own chip reader.

The instructions for doing this are are:

http://sodoityourself.com/hacking-ibm-thinkpad-bios-password/

Hope this helps,

Chris

Hi:
It is time to change the CMOS Battery Backup, its located inside the unit is the size of an nickle.

I concur with what Diegotech stated.

To iterate further;

1) The DC Power Jack (DC IN), may have cracked solder joint/s on the motherboard connector, (Female), where the DC Power Jack plugs in.

Resolder

2) The DC Power Jack may be broken.
Center Pin mount, and/or body of DC Power Jack, and/or Outer Shell mount.

Replace DC Power Jack.

3) Wires from the DC Power jack plug to the female connector on the motherboard, may be bad.

Replace DC Power Jack.

Two examples, of a place to buy an IBM ThinkPad T41 DC Power Jack,

1) http://www.buy.com/prod/dc-power-jack-connector-socket-for-ibm-thinkpad-t40-t41-t42-r50-r51-r52/q/sellerid/23962916/loc/101/215782035.html

2) http://www.machinaelectronics.com/store/buypart/IBM_Thinkpad_T41/DC-P001

Past this point it's a bad DC sensor on the motherboard.

Replace motherboard.

IBM ThinkPad T41 Service Manual, (Free),

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-ibmlenovo

On this page go down to the 8th line.
The one that starts with > ThinkPad T20.

Go across, and click on > T41

Takes approximately 2 seconds to see the first page, and additional time to fully download.

Page 142 for 14.1 inch LCD screen
Page 151 for 15 inch LCD screen

(PDF file page number box at top)

You can install the T41 2373 drivers

Visit the below link to download the drivers

http://www.bioticaindia.com/thinkpad-t41-2373.html

Hi there.
Unfortunately you cannot download the recovery CD for free, you can download them but it is going to cost you.
Take a look at this site for all IBM Thinkpad recovery CD's >>>>

http://www.thinkpadrecoverycds.com/


Good luck and thanks for using FixYa!!

Download this manual for IBM ThinkPad T41

Scroll to page 85-89 for accesing ram under keyboard.

If prior to this it works intermittently with the AC adapter, it means the connection from the adapter power unit to the motherboard was lost and this is a typical problem with the Thinkpad. It needs a re-soldering job and not something that one can do without a proper repair manual on how to open the laptop. Try googling your problem and find out if someone has the same experience and managed to resolder by him/herself.