Bypass or Remove a BIOS Password

A BIOS password is a protection measure that can stop someone turning on a computer system or changes in some of the most sensitive areas are computer. Many big name computer manufacturers like Dell and HP lock of the clients in this area because they do not want the customer to change something and possibly damage the machine (you can have what the manufacturers warranty). However, if someone like to make a computer technician or a hardware enthusiast needs some changes to the hardware with the computer, they need to access the BIOS. Here are some methods to bypass or remove a BIOS password.

NOTE: Do not try to guess the password on a passworded Hard Drive. 3 wrong guesses will often 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 too simple the CMOS battery. A computer will remember your settings and keep the time, even when turned off and since these parts of small battery powered inside the computer called the CMOS battery. If we take this battery, the computer will forget much of its hardware settings, including the BIOS password. This should not be done on laptops, when you are not experienced with laptop hardware.

Anyway, open up the computer case using a screw driver and locate the flat, circular and metallic CMOS battery. It should look something like the picture to the top. Some computers have this part standing upright.

Once you have located it, observe how the latches are holding it. There are many different ways to remove a CMOS battery but the most common way on newer computers can be seen in the picture below.

Be sure to shut down the computer, unplug the power cord and unplug all USB devices when they are turned off. The computer must not be able to get the power from anywhere, for this to work. Take the CMOS battery and wait 10 to 25 minutes before it’s back in. The reason for this delay because the computer still in its power capacitors store even though everything is separate. The waiting time is enough time to discharge for them.

Plug everything back in, turn the computer off and enter the BIOS. If everything went well it should not be forgotten. In some cases, if you get strange error messages when you boot now, you have to goto “Load BIOS Defaults” in BIOS and save your changes to resolve them.

If this method didn’t work, try one of the methods below.

How to Bypass or Remove a BIOS Password using Software:
!BIOS is a freeware utility which is designed to be a whole BIOS and security suite. It has the ability to decrypt the passwords used in some of the most common BIOS makes such as Award, Phoenix, American Megatrends, IMB etc..
It also has the ability to brute force the password (known as “blasters”). However, this method is dangerous and can result in some unexpected and unwanted results.

Note: Because of this applications password cracking abilities, some antivirus software may report it as a virus/trojan. This is a false positive.

To start using !BIOS, reboot your computer and take note of the BIOS type and version you are running. For example, If your motherboard uses Award BIOS you should look for the text “Award Medallion BIOS 6.0″ or something similar.

Download !BIOS from here and save it to your desktop. Then, open a DOS command windows by going to Start > Run and type: cmd

Once you see a black screen in front of you, type: cd desktop
You should now see something like: C:\Documents and Settings\YourUserName\Desktop>

Now type the name of the file you just downloaded, if you haven’t changed the name just type in: bios320.exe

Use the down arrow and choose “Crackers” and then press the right arrow. Using the up and down arrows, select the BIOS that the motherboard is using and press Enter.

You should now see a menu asking what you want to crack, in most cases its the Supervisor or System Passwords you want to crack, so press the 1 key on your keyboard. It will then show you another menu asking how you want it to be cracked. Option 1 is pretty good so try that first by pressing the 1 key on your keyboard. You should now have your BIOS password.

Reboot the computer, enter the BIOS and try it out.

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

On many computers (especially old ones), computer manufacturers build in backdoor passwords for their own technicians to use so they can access the BIOS when the hardware is being serviced. Here are some of the ones that have been reported. You may need to try quite a few passwords before you find one that works

These passwords are CaSe SeNsItIve.

AMI BIOS Backdoor Passwords:

  • A.M.I.
  • AMI
  • AMI?SW
  • AMI_SW
  • BIOS
  • MI
  • Oder

Award BIOS Backdoor Passwords:

  • (eight spaces)
  • 01322222
  • 589589
  • 589721
  • 595595
  • 598598
  • ALLY
  • ALLy
  • aLLY
  • aLLy
  • aPAf
  • award
  • awkward
  • Condo
  • condo
  • d8on
  • djonet
  • HLT
  • J256
  • J262
  • j262
  • j322
  • j332
  • J64
  • KDD
  • Lkwpeter
  • PINT
  • pint
  • SER
  • syxz
  • SYXZ
  • Russian Award BIOS Passwords:

  • %øåñòü ïpîáåëîâ%
  • %äåâÿòü ïpîáåëîâ%

Phoenix Backdoor BIOS Passwords:

  • BIOS
  • CMOS
  • phoenix

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

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