Question about IBM ThinkPad T41 Notebook

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Jumper location Hi there: I was just wondering if you could tell me where exactly the jumper on the motherboard is located, I'll be very much appreciated. I am stuck with the power on password, it cannot be removed by just removing the back up battery. cheers

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Im presuming we are talking about the Supervisor Password. (Screen boots to a lock symbol) If so im afraid that there is not a reset jumper as the password is stored on a chip.

To read the chip to get the password would require major 'surgery' on the laptop.

Im not aware of any other soloution to this issue.

Posted on Jun 21, 2008


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I got a bios protected Toshiba A500 PSAR9A from auction. Solved by the method below:
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4. Use some kinds of metal wires to short connect JCOMS, use some tape to stick it, make sure the metal wire under the tape is exactly short the jumper.
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Alternately you can unplug power, remove internal battery and short the connecter's ends for 5 mins using a metallic wires.

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you will need to get to the jumpers for bios to be able to reset the password or remove the password, this is easy with a desktop computer, but if you have a laptop but you think you guys can open the laptop and locate the bios or cmos jumpers then go ahead.
On the computer motherboard locate the BIOS clear / password jumper or dipswitch and change its position. Once this jumper has been changed, turn on the computer and the password should be cleared. Once cleared, turn the computer off and return the jumper or dipswitch to its original position.

The location of the jumpers or dipswitches may vary; however, here are general locations where these jumpers / dipswitch may be located.
  1. On the edge of the motherboard - Most jumpers are located on the side of the motherboard for easy accessibility, verify by looking at all visible edges of the motherboard.
  2. By the CMOS battery - Some manufactures will place the jumper to clear the CMOS / BIOS password by the actual CMOS battery.
  3. By the processor - Some manufactures will place the jumpers by the processor of the computer. However, note that in some cases these jumpers will be to change the processor and not the password.
  4. Under the keyboard or bottom of laptop - If you are working on a laptop computer the location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.
  5. Other visible location - While it is possible that the jumpers / dipswitches may not be in a visible location, most manufactures try to make things easier by placing the jumpers / dipswitches in another visible location.

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A. By Using the Motherboard Jumper:
In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.
Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.
When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.
Make sure to turn the PC off before opening the cabinet and resetting the jumper.

B. By Using Software:

I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds
BIOS/CMOS Password Recovery Tool Service:

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