Unlock BIOS/UEFI password

There is a number of ways to do this. There can be found some.

  • Use backdoor PWD
  • Reset CMOS
  • Short circuit SDA and SCL in the security chip
  • Use some PWD removal too software
  • Using MS DOS Command

Method 1: Use backdoor PWD

  1. Power on to BIOS.
  2. When prompted, enter some PWD and confirm
  3. After the third retry, message System Disable will appear, followed by code to get backdoor password
  4. On another computer open site https://bios-pw.org
  5. Enter this code and click on Get password
  6. You will get list of possible backdoor passwords, try with them.

 

Some possible passwords:

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

AWARD BIOS Passwords:
01322222
589589
589721
595595
598598
ALFAROME
ALLy
aLLy
aLLY
ALLY
aPAf
_award
award
AWARD_SW
AWARD?SW
AWARD SW
AWARD PW
AWKWARD
awkward
BIOSTAR
CONCAT
CONDO
Condo
d8on
djonet
HLT
J64
J256
J262
j332
j322
KDD
Lkwpeter
LKWPETER
PINT
pint
SER
SKY_FOX
SYXZ
syxz
shift + syxz
TTPTHA
ZAAADA
ZBAAACA
ZJAAADC

PHOENIX BIOS Passwords:
BIOS
CMOS
phoenix
PHOENIX

Misc Common Passwords:
ALFAROME
BIOSTAR
biostar
biosstar
CMOS
cmos
LKWPETER
lkwpeter
setup
SETUP
Syxz
Wodj

Other Manufacturer BIOS Passwords:
Biostar – Biostar
Compaq – Compaq
Dell – Dell
Enox – xo11nE
Epox – central
Freetech – Posterie
IWill – iwill
Jetway – spooml
Packard Bell – bell9
QDI – QDI
Siemens – SKY_FOX
TMC – BIGO
Toshiba – Toshiba
VOBIS & IBM – merlin

Metod 2: Reset CMOS

        1. Shut down the laptop, unplug the power cord, remove the battery
        2. Open computer
        3. Find the CMOS battery, remove it for 30 seconds (if possible),
          or press Clear CMOS button on the motherboard for 30 seconds
          or find CMOS jumper, remove it / short other pair of pins for 30 seconds
        4. Connect everything back and power on
        5. press F1, go to BIOS, configure date and other details

Short circuit SDA and SCL in the security chip

This method requires more experience. You must find these pins on the security pins. It requires to power on the computer and short circuit these 2 pins as soon as keyboard light is on. Possible is that more retries will be needed. After this step, in BIOS should be reset password or disabled.

Use some PWD removal too software

There is a number of SW for password reset, as:

  • !Bios
  • CMOS De-Animator 3
  • CmosPwd
  • PC CMOS Cleaner

Using MS DOS Command

In command prompt enter next commands:

debug
o 70 2E
o 71 FF
quit

After the computer restarts, CMOS will be reset.