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How To Bypass Bios Passwords. Read This Amazing Guide


12 replies to this topic

#1 Mopargeek

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Posted 24 May 2007 - 02:46 PM

The BIOS;

Your computers BIOS is the first program that is run when your computer starts.



You can tell the BIOS to ask for a password when it starts, thus restricting access to your computer.
In most cases , It will Be Your Parents/Relative's.

Learn how to bypass it


Their Are 2 Ways Of Doing This. ;


1) Using a Backdoor BIOS Password

Some BIOS manufacturers implement a backdoor password. The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.

AMI Backdoor BIOS Passwords

Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.

Award Backdoor BIOS Passwords

One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA, and ZJAAADC.

Phoenix Backdoor BIOS Passwords

Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.

Backdoor BIOS Passwords from Other Manufacturers

Reported BIOS backdoor passwords for other manufacturers include:


VOBIS & 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


2) 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:

* 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)
* Phoenix 4 release 6 (User)
* Gateway Solo - Phoenix 4.0 release 6
* Toshiba
* Zenith AMI



Thanks
Mopargeek.

Edited by Mark420, 24 May 2007 - 04:01 PM.


#2 yordan

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Posted 24 May 2007 - 04:03 PM

Nice and useful tutorial, thanks.
I particularly loved the Enox backdor password, which is Enox in the reverse order, adding an internal 11 in order to make it less easy to guess! B)

#3 tansqrx

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Posted 27 May 2007 - 05:43 AM

I have found that one of the best ways of getting by the password is clearing the BIOS. This is usually accomplished by one of the following:
1. Take the battery out
2. Short out a specific DIP pin. This usually called CMOS Clear or some other variant. This is usually near the BIOS itself but mileage will vary.
3. Some times you will have to turn the computer on while the Clear CMOS DIP is shorted.
4. You can also leave the battery out for a really long time (a few days).
5. Any combiniation of the above.

This of course will not get the actual password so this will not work if you are trying to be covert. The next time a person boots the machine, they will know something is wrong because there will be no password at all. You will also loose any changes you have made in your CMOS. I have never been a big fan of CMOS passwords because if you have physical access to the machine then it is only a simple matter of taking the case off to get rid of the password. My last machine was a little flaky so I had to reset the BIOS all the time so I had the DIP and procedure memorized.

#4 wutske

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Posted 27 May 2007 - 11:28 AM

I have found that one of the best ways of getting by the password is clearing the BIOS. This is usually accomplished by one of the following:
1. Take the battery out
2. Short out a specific DIP pin. This usually called CMOS Clear or some other variant. This is usually near the BIOS itself but mileage will vary.
3. Some times you will have to turn the computer on while the Clear CMOS DIP is shorted.
4. You can also leave the battery out for a really long time (a few days).
5. Any combiniation of the above.

This of course will not get the actual password so this will not work if you are trying to be covert. The next time a person boots the machine, they will know something is wrong because there will be no password at all. You will also loose any changes you have made in your CMOS. I have never been a big fan of CMOS passwords because if you have physical access to the machine then it is only a simple matter of taking the case off to get rid of the password. My last machine was a little flaky so I had to reset the BIOS all the time so I had the DIP and procedure memorized.


having no power for about 5 seconds is more than enough to clear a CMOS. So unplugging to main power cord, leaving the PSU discharge (takes about 5-10 seconds), changing the clear CMOS jumper for about 5 seconds (or removing the battery for 5 seconds) and then putting it back is the best way.

#5 Ronel

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Posted 01 September 2007 - 06:37 AM

Nice!

Anyone here know how can I know my BIOS. It has pop-up booting using F11

#6 Grafitti

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Posted 03 September 2007 - 05:01 PM

You need to get into the BIOS. it'll be written there. Either that, or right when you turn on the computer, either the first or second batch of text that pops up for a second onscreen tell you your BIOS and version number.

#7 Guest_FeedBacker_*

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Posted 17 November 2007 - 09:19 AM

I have been working w/Dell tech. I am one of the dummies who added a HDD password then forgot it.

Dell provided me w/hdd passwords, none of the 10 p/w's worked. W

hat can I be doing wrong? or could I have another issue also?

At the same time that I put the hdd password on my Inspiron 4000 laptop I also updated my BIO'S.

If U cannot tell..I am a rookie. Thanks, from

-theladydiane1

#8 ethergeek

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Posted 19 November 2007 - 03:21 AM

BIOS and HDD passwords are dumb because they are this easy to defeat. If you want any security, you're better off locking your machine in a closet and using actual encryption to secure your data.

If you don't have physical security, you don't have any security at all.

#9 Ronel

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Posted 22 November 2007 - 10:17 AM

NEW PROBLEM!!!

Backdoor password don't work....and I can't boot up the programs I need to reset it....usually it needs some boot-up....
and the floppy drive is still not working....HELP!!!

#10 yordan

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Posted 22 November 2007 - 12:51 PM

NEW PROBLEM!!!

Backdoor password don't work....and I can't boot up the programs I need to reset it....usually it needs some boot-up....
and the floppy drive is still not working....HELP!!!

Is your hardware in the list of hardware having a backdoor password ? Seems not.
Else, it seems that the new hardware chips don't have these security weaknesses any more, at least for your manufacturer. Good news from the security point of view. Bad news for these who lost their password.

#11 Tacho

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Posted 08 December 2007 - 02:36 PM

hello, I only want to add something here and that is the DELL laptops, if there was a BIOS password and the password is somehow forgotten, there is noway(NOWAY) we can bypass or alter the password, because they have a security chip installed , meaning that there is a BIOS chip and another chip(security chip) to store the password.

there is a way to reset this security chip by shorting two pins of the chip,but this can damage the main boeard permenantly.

anyone can do some google work about( DELL pasword) and can see what am saying here.



thank you


Tacho

#12 Guest_(G)happymark_*

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Posted 16 October 2009 - 10:00 AM

 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/

-reply by happymark

#13 Guest_(G)venetta_*

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Posted 13 February 2010 - 01:49 AM

cmos/bios with windows xp x64How To Bypass Bios Passwords.

updates tweaked my windows f11 won't take me to cmos and safe mode freezes at gagp30kx.Sys...Can't get to boot from cd with out unplugging hard drive

 

-question by venetta

 





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