Clearing a BIOS Password
How to clear an unknown BIOS password.
If you have mistakenly lost your password to the computer
BIOS password or you receive a password at boot you will need
to clear the BIOS password by one of the following methods.
Precaution: When inside the computer
please be sure of the potential of ESD. (Electro Static Discharge)
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
by 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.
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.
By the CMOS battery - Some manufactures will place the jumper
to clear the CMOS / BIOS password by the actual CMOS battery.
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
Under the keyboard or bottom of laptop - If you are working
on a computer laptop 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.
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.
Additionally, when looking for the jumper / dipswitch the
label of that switch can be anything however in most cases
will be labeled CLEAR - CLEAR CMOS - CLR - CLRPWD - PASSWD
- PASSWORD - PWD.
On the computer motherboard locate and remove the CMOS battery
for at least 10 minutes allowing the computer to loose its
information. Note: this will not work on all computers.
If your manufacturer has a bypass password this can be entered
and allow you access to the BIOS and or computer. Because
of the security risk of a bypass password generally only older
computers will have this option. In addition it is likely
that this information will only be able to be obtained from
the computer, motherboard or BIOS manufacturer.
On the computer motherboard locate the CMOS solider beads
and jump the solider beads to clear the password. The identification
and location of these solider beads can vary and if not available
in computer documentation is generally only obtainable through
the computer manufacturer.
If one of the above solutions do not clear the password or
you are unable to locate the jumpers or solider beads it is
recommended you contact the computer manufacturer for the
steps on clearing the computer password.