How to Reset / Bypass (hack) BIOS Password

BIOS passwords can add an additional layer of security for desktop and laptop computers. This is used to 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 burden if users forget their password, or change the password to intentionally on a company's IT department. Sending the unit back to the factory to reset the BIOS password can be expensive and usually not covered by the warranty. Do not worry, all is not lost. There are several tricks that can be used to bypass or reset the BIOS

DISCLAIMER 

This article is intended for IT professionals and systems administrator with experience of computer hardware services. This is not intended for home users, hackers, or business intrusion / theft of computers to crack on a stolen PC. Please do not try one of these procedures if you are unfamiliar with computer hardware, and please use this information responsibly. bayuindragunawan.wordpress.com not responsible for any use or misuse of this material, including data loss, hardware damage, or personal injury.
Before attempting to bypass the BIOS password on your computer, please take a minute to contact the support staff hardware manufacturer directly and ask for a recommended method of security through the BIOS. In the event producers can not (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 the manufacturers backdoor password to access BIOS
    * Use password cracking software
    * Reset the CMOS using the jumpers.
    * Removing the CMOS battery for at least 10 minutes
    * Overloading the keyboard buffer
    * Use professional services
Please remember that most BIOS passwords do not protect the hard drive, so if you need to recover data, simply remove the hard drive and install on the same system, or configure it as a slave drive in an existing system. Exceptions 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 and hard drives as well, you will not be able to access data on the drive. 

The first way 

Backdoor password
Many BIOS manufacturers have provided backdoor passwords that can be used to access the BIOS setup in case you lose your password. This password is case sensitive, so you may want to try different combinations. Please note that the key associated to "_" in the U.S. 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 the wrong password more than 3 times. Reading the manufacturer's documentation for BIOS settings before you begin typing in a password
Award BIOS backdoor passwords: 

ALFAROME ALLY ALLY ALLY ALLY aPAf _award AWARD_SW AWARD? SW AWARD SW AWARD PW kikuk kikuk 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 01.322.222
589589 589721 595595 598598

AMI backdoor BIOS password:

AAAMMMIII AMI BIOS PASSWORD HEWITT RAND AMI? AMI_SW lkwpeter AMI SW CONDO
PHOENIX BIOS backdoor password:
phoenix, PHOENIX, CMOS, BIOS

 MISC. GENERAL password

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

OTHER BIOS password by the manufacturer
Password ManufacturerVOBIS & IBM merlinDell DellBiostar BiostarCompaq CompaqEnox xo11nEEpox centerFreetech PosterieIwill IWillJetway spoomlPackard Bell bell9QDI QDISiemens SKY_FOXTMC Installer failsToshiba Toshiba
TOSHIBA BIOS
Most Toshiba laptops and some desktop systems will bypass BIOS password if the left shift key is held down during boot
IBM BIOS APTIVA
Press both mouse buttons repeatedly during the boot


Second Way

Password cracking software
The following software can be used to reset the BIOS on many chipsets. If your PC is locked with a BIOS administrator password that will not allow you to access the floppy drive, this utility may not work. Also, because this utility does not come from the manufacturer, use with caution and at your own risk.

    CMOS password recovery tools * 01.03
    * RemPass
    * KILLCMOS 

Third way

Using the Motherboard "Clear CMOS" Jumper or switch settings
Many motherboards feature a set of jumper or dipswitch that will clear CMOS and remove all the settings in it, including BIOS passwords. The location of this jumper / dipswitch will vary depending on the motherboard manufacturer and ideally you should always refer to your motherboard or computer manufacturers documentation. If documentation is unavailable, the jumpers / dipswitch may sometimes be found along the edge of the motherboard, next to the CMOS battery, or near the processor. Some manufacturers may label CLEAR - CLEAR CMOS - CLR - CLRPWD - passwd - PASSWORD - PWD.
On laptop computers, dipswitch usually found under the keyboard or in 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 find and jumper switches, turn on the computer and the examiner whether the password is blank. If you have, turn on the computer and return the jumper or dipswitch to its original position.

Fourth way

Removing the CMOS Battery
CMOS settings on most systems are buffered by a small battery plugged in to the motherboard. (It looks like a small battery watches). If you unplug the PC and remove the battery for 10-15 minutes, the CMOS may reset itself and the password would be empty. (Together with the other machine specific settings, so make sure you are familiar with manually reconfiguring the BIOS settings before you do.) Some manufacturers backup the power to the CMOS chipset by using a capacitor, so if your first attempt fails, leave the battery out (with system unplugged) for 24 hours. Some batteries are actually soldered onto the motherboard making this task more difficult. Unsoldering battery incorrectly may damage the motherboard and other components, so please do not try this if you are inexperienced. Another option might be to remove the CMOS chip from the motherboard for a certain period of time. Note: Cancellation of the battery to reset the CMOS will not work for all PCs, and almost all newer laptops store their BIOS passwords in a way that does not require continuous power, so the revocation of the CMOS battery may not work at all. IBM Thinkpad laptops lock the hard drive as the BIOS when the supervisor password. If you reset the BIOS password, but can not reset the hard drive password, you may not be able to access the drive and will remain locked, even if you place it in a new laptop. IBM Thinkpads have special jumper switches on the motherboard, and this should be used to reset the system.