Hacking/Resetting the BIOS

Here is how to reset the BIOS to change the Bios password . There are many ways like using Backdoor BIOS passwords or by manually resetting the BIOS, or by using softwares. etc.

Backdoor password are like default passwords.

Here is list of Backdoor BIOS passwords.



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.



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 BIOSTAR , KDD ZAAADA , ALLy , CONCAT , Lkwpeter , ZBAAACA, aLLy, CONDO, LKWPETER, ZJAAADC,

aLLY, Condo, PINT, 01322222, ALLY, dShocked,

pint, 589589, aPAf, djonet, SER, 589721,

_award, HLT , SKY_FOX, 595595, AWARD_SW, J64,

SYXZ, 598598, AWARD?SW, J256, syxz, AWARD,

SW, J262, shift + syxz, AWARD, j332, TTPTHA,

AWKWARD, j322, awkward

AMI BIOS Backdoor Passwords: AMI BIOS PASSWORD HEWITT RAND AMI?SW AMI_SW LKWPETER 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



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.



Resetting via DOS-Mode :



A simple DOS trick resets (deletes) your motherboard BIOS (CMOS) password, to grant access to your computer and/or BIOS Setup. In Windows 9x you can drop to dos, boot from a win9x floppy or reboot to the native MS-DOS mode, using the “Command prompt only” option from the Windows 95/98 Startup Menu (hold Shift and F5 at the same time while your PC boots).



Switch to the C:\windows\command directory and type:



DEBUG



and hit Enter. You’ll see a dash (-) at the DEBUG prompt. Now type:



o 70 2e



which will show as -o 70 2e at the DEBUG prompt. Hit Enter. Then type:



o 71 ff



and hit Enter. Finally type:



Q

and hit Enter one last time, to quit DEBUG, back to the C:\> prompt.

Now you’re ready to reboot your PC, and press the appropriate key or key combo (look it up in your motherboard manual if you don’t know it) to access your BIOS Setup. You’ll notice that the password is gone.

NOTE: This works only with the following MS-DOS versions: MS-DOS 6.00 - 6.22 and MS-DOS 7.xx (MS Windows 9x)



To stop it you’ll need to delete Debug.exe from your installation. Use a program like DeepFreeze to lock out key combinations during boot, and ensure that C: is your default first boot device.



Download BIOS utilities from here http://www.biosman.com/bios_utils.html

Other method is to boot in DOS then goto DOs prompt and follow the below steps : type debug hit enter type o 70 10 hit enter type 0 71 20 hit enter type quit hit enter exit DOS and reboot ur machine.



Source : Internet