Welcome to PC & Home Electronics Forum!
A great place for help and reviews on computers, home electronics, cell phones, software and much more!

• » Computer Software Help
• » Computer Hardware Help
• » Home Electronics Help and Advice
• » Consumer Reviews

We are a friendly community for PCs, home electronic enthusiasts. Our community is here when you need help.
Don't hesitate to join us now and discover just what so many people are talking about!

YES! I want to register for free right now!
Results 1 to 2 of 2

Thread: How to Bypass BIOS Passwords

  1. #1
    Administrator PBP Administrator Rank Tetris Champion, Chopper Challenge Champion, Wordex Champion Rumas's Avatar
    Join Date
    Dec 2006
    Posts
    1,223
    Rep Power
    10
    Computer Details
    Rumas's Computer Specs:
    CPU:
    AMD FX-8350 4.0GHz Eight-Core
    Mainboard:
    ASUS SABERTOOTH 990FX R2.0
    RAM:
    16GB of Corsair CMZ16GX3M2A1866C9
    HDD:
    2x 2TG WD raided, WD 120GB SSD
    Graphics:
    2x NVIDIA GeForce GTX 560 Ti 1GB GDDR5
    Sound:
    On-board audio
    OS:
    Windows 7 Ultimate, XP, Linux

    How to Bypass BIOS Passwords

    How to Bypass BIOS Passwords

    BIOS passwords can add an extra layer of security for desktop and laptop computers. They are used to either prevent a user from changing the BIOS settings or to prevent the PC from booting without a password. Unfortunately, BIOS passwords can also be a liability if a user forgets their password, or changes the password to intentionally lock out the corporate IT department. Sending the unit back to the manufacturer to have the BIOS reset can be expensive and is usually not covered in the warranty. Never fear, all is not lost. There are a few known backdoors and other tricks of the trade that can be used to bypass or reset the BIOS

    DISCLAIMER
    This article is intended for IT Professionals and systems administrators with experience servicing computer hardware. It is not intended for home users, hackers, or computer thieves attempting to crack the password on a stolen PC. Please do not attempt any of these procedures if you are unfamiliar with computer hardware, and please use this information responsibly. preferredbypete.com is not responsible for the use or misuse of this material, including loss of data, damage to hardware, or personal injury.


    Before attempting to bypass the BIOS password on a computer, please take a minute to contact the hardware manufacturer support staff directly and ask for their recommended methods of bypassing the BIOS security. In the event the manufacturer cannot (or will not) help you, there are a number of methods that can be used to bypass or reset the BIOS password yourself. They include:

    Using a manufacturers backdoor password to access the BIOS

    Use password cracking software

    Reset the CMOS using the jumpers or solder beads.

    Removing the CMOS battery for at least 10 minutes

    Overloading the keyboard buffer

    Using a professional service

    Please remember that most BIOS passwords do not protect the hard drive, so if you need to recover the data, simply remove the hard drive and install it in an identical system, or configure it as a slave drive in an existing system. The exception to this are laptops, especially IBM Thinkpads, which silently lock the hard drive if the supervisor password is enabled. If the supervisor password is reset without resetting the and hard drive as well, you will be unable to access the data on the drive.


    --------------------------------------------------------------------------------

    Backdoor passwords

    Many BIOS manufacturers have provided backdoor passwords that can be used to access the BIOS setup in the event you have lost your password. These passwords are case sensitive, so you may wish to try a variety of combinations. Keep in mind that the key associated to "_" in the US keyboard corresponds to "?" in some European keyboards. Laptops typically have better BIOS security than desktop systems, and we are not aware of any backdoor passwords that will work with name brand laptops.

    WARNING: Some BIOS configurations will lock you out of the system completely if you type in an incorrect password more than 3 times. Read your manufacturers documentation for the BIOS setting before you begin typing in passwords

    Award BIOS backdoor passwords:

    ALFAROME ALLy aLLy aLLY ALLY aPAf _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 01322222
    589589 589721 595595 598598

    AMI BIOS backdoor passwords:

    AMI AAAMMMIII BIOS PASSWORD HEWITT RAND AMI?SW AMI_SW LKWPETER A.M.I. CONDO

    PHOENIX BIOS backdoor passwords:

    phoenix, PHOENIX, CMOS, BIOS

    MISC. COMMON PASSWORDS

    ALFAROME BIOSTAR biostar biosstar CMOS cmos LKWPETER lkwpeter setup SETUP Syxz Wodj

    OTHER BIOS PASSWORDS BY MANUFACTURER

    Manufacturer Password
    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
    TMC BIGO
    Toshiba Toshiba

    TOSHIBA BIOS

    Most Toshiba laptops and some desktop systems will bypass the BIOS password if the left shift key is held down during boot

    IBM APTIVA BIOS

    Press both mouse buttons repeatedly during the boot


    --------------------------------------------------------------------------------

    Password cracking software

    The following software can be used to either crack or reset the BIOS on many chipsets. If your PC is locked with a BIOS administrator password that will not allow access to the floppy drive, these utilities may not work. Also, since these utilities do not come from the manufacturer, use them cautiously and at your own risk.

    Cmos password recovery tools 3.1
    !BIOS (get the how-to article)
    RemPass
    KILLCMOS

    --------------------------------------------------------------------------------

    Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings

    Many motherboards feature a set of jumpers or dipswitches that will clear the CMOS and wipe all of the custom settings including BIOS passwords. The locations of these jumpers / dipswitches will vary depending on the motherboard manufacturer and ideally you should always refer to the motherboard or computer manufacturers documentation. If the documentation is unavailable, the jumpers/dipswitches can sometimes be found along the edge of the motherboard, next to the CMOS battery, or near the processor. Some manufacturers may label the jumper / dipswitch CLEAR - CLEAR CMOS - CLR - CLRPWD - PASSWD - PASSWORD - PWD. On laptop computers, the dipswitches are usually found under the keyboard or within a compartment at the bottom of the laptop.
    Please remember to unplug your PC and use a grounding strip before reaching into your PC and touching the motherboard. Once you locate and rest the jumper switches, turn the computer on and check if the password has been cleared. If it has, turn the computer off and return the jumpers or dipswitches to its original position.


    --------------------------------------------------------------------------------

    Removing the CMOS Battery

    The CMOS settings on most systems are buffered by a small battery that is attached to the motherboard. (It looks like a small watch battery). If you unplug the PC and remove the battery for 10-15 minutes, the CMOS may reset itself and the password should be blank. (Along with any other machine specific settings, so be sure you are familiar with manually reconfiguring the BIOS settings before you do this.) Some manufacturers backup the power to the CMOS chipset by using a capacitor, so if your first attempt fails, leave the battery out (with the system unplugged) for at least 24 hours. Some batteries are actually soldered onto the motherboard making this task more difficult. Unsoldering the battery incorrectly may damage your motherboard and other components, so please don't attempt this if you are inexperienced. Another option may be to remove the CMOS chip from the motherboard for a period of time.
    Note: Removing the battery to reset the CMOS will not work for all PC's, and almost all of the newer laptops store their BIOS passwords in a manner which does not require continuous power, so removing the CMOS battery may not work at all. IBM Thinkpad laptops lock the hard drive as well as the BIOS when the supervisor password is set. If you reset the BIOS password, but cannot reset the hard drive password, you may not be able to access the drive and it will remain locked, even if you place it in a new laptop. IBM Thinkpads have special jumper switches on the motherboard, and these should be used to reset the system.


    --------------------------------------------------------------------------------

    Overloading the KeyBoard Buffer

    On some older computer systems, you can force the CMOS to enter its setup screen on boot by overloading the keyboard buffer. This can be done by booting with the keyboard or mouse unattached to the systems, or on some systems by hitting the ESC key over 100 times in rapid succession.


    --------------------------------------------------------------------------------

    Jumping the Solder Beads on the CMOS

    It is also possible to reset the CMOS by connecting or "jumping" specific solder beads on the chipset. There are too many chipsets to do a breakdown of which points to jump on individual chipsets, and the location of these solder beads can vary by manufacturer, so please check your computer and motherboard documentation for details. This technique is not recommended for the inexperienced and should be only be used as a "last ditch" effort.


    --------------------------------------------------------------------------------

    Using a professional service

    If the manufacturer of the laptop or desktop PC can't or won't reset the BIOS password, you still have the option of using a professional service. Password Crackers, Inc., offers a variety of services for desktop and laptop computers for between $100 and $400. For most of these services, you'll need to provide some type of legitimate proof of ownership. This may be difficult if you've acquired the computer second hand or from an online auction.
    Last edited by Cobra; July 17th, 2007 at 11:49 PM.


    Please, DO NOT PM admins/mods for personal support. Keep posts here in the Forums instead and we all learn.

    Any questions you have will get a good answer as long as you have followed the forum rules and shown you have tried to help yourself. Your questions are clear and contain as much relevant info as possible, especially error messages and solutions you have tried.


    5 ways you can make PreferredByPete.com Better!

    Read the site RULES

  2. #2

    Re: How to Bypass BIOS Passwords

    i always do it the easy way buy changing the pin setting for factory defaut settings on the motherboard its the easiest way to do it i say instead of going through all the crack codes and what not....but that's just my way...lol

Similar Threads

  1. CW4000HD BIOS update 2.5
    By CASPER in forum CW4000 HD Files
    Replies: 0
    Last Post: November 7th, 2009, 12:18 PM
  2. Bios Help
    By zerodegrees8 in forum Motherboards
    Replies: 1
    Last Post: September 17th, 2009, 01:39 AM
  3. cw ver2 ami bios loader
    By CASPER in forum Loaders, Utilities and Manuals
    Replies: 0
    Last Post: January 20th, 2009, 03:54 PM
  4. cw3000hd ver2 bios file
    By CASPER in forum 3000 HD Files
    Replies: 0
    Last Post: January 3rd, 2009, 12:07 AM

Tags for this Thread