How to remove or bypass BIOS password

A BIOS password is a protection measure that can be used to stop someone powering up a computer system or making changes in some of the computers most sensitive areas. Many big name computer manufacturers such as Dell and HP lock the customers out of this area because they don’t want the customer to change anything to damage the computer which the manufacturer may have the warranty on it. However, when the computer technicians need to make some hardware changes to the computer, they will need to access the BIOS. Here are two methods to deal with BIOS password lost problem.
NOTE:

Do not try to guess the password on a passworded Hard Drive because 3 wrong guesses may result in the information on the hard drive being lost forever.

How to Bypass or Remove a BIOS Password by Removing the CMOS Battery:

The easiest way to remove a BIOS password is to simply remove the CMOS battery. A computer will remember its settings and keep the time even when it is turned off and unplugged because these parts are powered by small battery inside the computer called a CMOS battery. If you take out the battery, your computer will lose its hardware settings, including its BIOS password. This should not be performed on Laptops if you are not experienced working with laptop hardware. For removing the battery, please do the following

1. Open up the computer case using a screw driver and locate the flat, circular and metallic CMOS battery.

2. Once you have located it, observe how the latches are holding it and try to remove it.

3. After making sure to the power of your computer is down, unplug the power cables and any USB devices if they are connected to power. Pull out the CMOS battery and wait for about 10 to 25 minutes before putting it back in because the computer may still have power in its capacitors even if everything is unplugged. The waiting period will discharge the power in capacitors.

4. Restore everything you have just done and power up the computer and enter the BIOS again. If everything is ok, there should be no more password. In some cases, if you get error messages during bootup now, you will need to go to "Load BIOS Defaults" in BIOS and save the changes to fix them.

If this method does not work, try the following:

Bypass or Remove a BIOS Password using the manufacturer backdoor password:

On many computers, especially old ones, computer manufacturers keep backdoor passwords for their own technicians to use so they can access the BIOS when they are asked to fix this problem. The following are some of them that have been reported. You may need to try quite a few passwords before you find one that works.

Note: the following passwords are Case sensitive.

1. AMI BIOS Backdoor Passwords:


A.M.I.
AAAMMMII
AMI
AMI?SW
AMI_SW
BIOS
CONDO
HEWITT RAND
LKWPETER
MI
Oder
PASSWORD

2. Award BIOS Backdoor Passwords:

(eight spaces)
01322222
589589
589721
595595
598598
ALFAROME
ALLY
ALLy
aLLY
aLLy
aPAf
award
AWARD PW
AWARD SW
AWARD?SW
AWARD_PW
AWARD_SW
AWKWARD
awkward
IOSTAR
CONCAT
CONDO
Condo
condo
d8on
djonet
HLT
J256
J262
j262
j322
j332
J64
KDD
LKWPETER
Lkwpeter
PINT
pint
SER
SKY_FOXSYXZ
SKY_FOX
syxz
SYXZ
TTPTHA
ZAAAADA
ZAAADA
ZBAAACA
ZJAAADC

3. Phoenix Backdoor BIOS Passwords:

BIOS
CMOS
phoenix
PHOENIX

4. Other Manufcaturers Backdoor Passwords: (manufacturer name - password)

VOBIS and IBM - merlin
Dell - Dell
Biostar - Biostar
Compaq - Compaq
Enox - xo11nE
Epox - central
Freetech - Posterie
IWill - iwill
Jetway - spooml
Packard Bell - bell9
QDI - QDI
Siemens - SKY_FOX
SOYO - SY_MB
TMC - BIGO
Toshiba - Toshiba