TUTORIAL
Here is the ultimate solution for your long time problem.
Actually what is bios password?
BIOS stands for basic input output system.bios passwords are additional security settings to prevent unauthorized access to your computer.
So why it is for?
BIOS passwords are used to add some extra security to computers. You can either set a password to prevent access to BIOS settings or to prevent PC from booting.
why we have to recover it?
sometimes this extra security might become a pain when you forget the BIOS password or someone changes your system BIOS password intentionally.
how to recover it?
There are many known ways to reset / remove / bypass the password:
By removing the CMOS battery
By using the motherboard jumper
By using MS DOS command
By using software
By using Backdoor BIOS password
VARIOUS METHODS
A. By Removing the CMOS Battery:
Almost all motherboards use a small coin sized CMOS battery to store all BIOS settings along with the password. To reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15-30 minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings.
If it fails, then try to remove the battery for at least one hour.
B.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
C. By Using MS DOS Command:
This method works only if you have access to the system when its turned on because this method requires MS DOS. Open MS DOS from programs menu and provide following commands one bye one:
debug
o 70 2E
o 71 FF
quit
NOTE: The first character in the above commands is "O" and not the number 0.
After providing the above commands, restart your system and it should reset the CMOS Settings along with the BIOS password.
If you are curious to know how it works? then let me explain the above commands:
In this method we are using the Debug tool of MS DOS. The "O" character present at first in these commands, outputs the values to IO ports. The number 70 and 71 are port numbers which are used to access CMOS memory. By providing FF value we are telling CMOS that there is an invalid checksum and it resets the CMOS settings as well as BIOS password.
There are a few software which can also reset CMOS settings or BIOS password or both within a few clicks. But as stated above you should have access to a system which is turned on and should have access to MS DOS or MS Windows:
1-KillCMOS
KillCMOS basically "resets" your computer's CMOS settings to the factory defaults. Works with ALL CMOS. KiLLCMOS only changes checksums & values that makes the motherboard CMOS revert back to factory defaults.
download link-http://www.majorgeeks.com/download2969.html
2-!BIOS-!Bios is a tool originally developed for a brute, blunt removal of passwords from BIOSes. Through it’s development it has been severly extended, and Eleventh Alliance have now recieved emails from computer support divisions, hackers and not least of all ordinary computer users who has expressed gratitude for what they consider one of the best toolkits available.Features:
!Bios can decrypt the passwords used in some most common BIOS (including various bioses/versions by IBM, American Megatrends Inc, Award and Phoenix).
!Bios can also save and restore the IBM standard CMOS/NVRAM memory where almost all common Bioses store the BIOS setup settings.
!Bios can save the part of the RAM dedicated for the BIOS (which has security implications in some BIOSes as encryption algorithms and/or password may actually reside here in some badly coded BIOSes).
!Bios can do crude, brutal attacks (â€blastersâ€) which removes password from a lot of Bioses. A bit dangerous though, can give unexpected and unwanted results.
!Bios has a CMOS editor where you through a interface with similarities to several hex-editors can modify the CMOS/NVRAM memory in binary, decimal and hexadecimal ways. (only adviced for very experienced hackers)
!Bios has a command line interface (CLI) and a very simple VGA-text interface, GUI. If no parameters is passed to !Bios, it starts the easy-to-use GUI, otherwise it starts the GUI.
!Bios has built-in support pages which provides several tricks and tips, notes about known backdoors etc.
download link-http://www.11a.nu/wp-content/uploads/2006/03/BIOS320.EXE
3-CmosPwd-
CmosPwd decrypts password stored in cmos used to access BIOS SETUP.
Works with the following BIOSes
ACER/IBM BIOS
AMI BIOS
AMI WinBIOS 2.5
Award 4.5x/4.6x/6.0
Compaq (1992)
Compaq (New version)
IBM (PS/2, Activa, Thinkpad)
Packard Bell
Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
Phoenix 4 release 6 (User)
Gateway Solo - Phoenix 4.0 release 6
Toshiba
Zenith AMI
With CmosPwd, you can also backup, restore and erase/kill cmos.
download link-http://www.cgsecurity.org/cmospwd-5.0.zip
Some BIOS manufacturer put a backdoor password in BIOS which always works irrespective of what password you have set in BIOS. Its a master password which is used for testing and troubleshooting purposes.
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
%øåñòü ïpîáåëîâ%
%äåâÿòü ïpîáåëîâ%
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
NOTE: All these passwords are case-sensitive and are changed from time to time by manufacturers.
some useful tips-
1-Depending on the manufacturer of your motherboard, you may be able to use what it is called a "backdoor password" to bypass the password problem. 2-Try looking at the external links for possible passwords.
3-Remember that passwords are Case Sensitive. The last two passwords in the AWARD BIOS list are in Russian.
4-Sometimes the bios reset jumper has a "handle" and is colored a bright color to make it easy to locate. Also, look in your case near the bottom. If it is a manufactured computer then it probably came with a little sticker with the jumpers and the location of the reset jumper.
5-In rare cases, the battery may be soldered into the motherboard and very difficult to remove. If this is true, you may need to find a jumper near the battery that achieves the same result. If you don't know which jumper it is, you CAN test them all. Unplug (really unplug, not just power off) the computer, and start a methodical change in all the jumpers positions, change one, count to ten, change it back, move on the next. After completing the lot of them (on older motherboards this could take a while) plug the PS back in, and boot up. You may risk damaging your computer with this procedure if you are not careful.
6-Some notebooks such as IBM's ThinkPad render useless when the BIOS password is being tried to reset.
7-Don't just start pulling jumpers on the motherboard. Make sure you know where it was and in what position in case anything goes wrong put it back.
8-If you turn your computer on and it makes strange noises / beeps, you should contact the vendor, manufacture, or a tech guy to fix it.
No comments:
Post a Comment