My laptop R30 THINKPAD IBM supervisor bios is lock hw do i open it
Resetting the BIOS Password using Software
Every system must store the BIOS password information somewhere. If
you are able to access the machine after it has been booted
successfully, you may be able to view the BIOS password. You must know
the memory address where the BIOS password is stored, and the format in
which the BIOS password is stored. Or, you must have a program that
knows these things.
You can write your own program to read the BIOS password from the
CMOS memory on a PC by writing the address of the byte of CMOS memory
that you wish to read in port 0x370, and then reading the contents of
port 0x371.
!BIOS will recover the BIOS password for most common BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix.
CmosPwd will recover the BIOS password for the following BIOS versions:
SOURCE: i forget bios password for ibm thinkpad r30-2656
This information is intended for experienced users. It is not intended for basic users, hackers, or computer thieves. Please do not try any of following procedures if you are not familiar with computer hardware. I'll not be responsible for the use or misuse of this information, including personal injury, loss of data or hardware damage. So use it at your own risk.
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: http://www.biospasswordrecovery.com/
SOURCE: ibm thinkpad 2656 shows locked symbol when power on
Note that with newer versions with an embedded security chip it is impossible to remove a set password by removing both batteries.
The only thing you can do at that time is replacing the motherboard.
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