Basic BIOS Password Crack

READ EVEYTHING

BEFORE YOU USE ANY METHOD LISTED BELOW.

Basic BIOS password crack - works 9.9 times out of ten

This is a password hack but it clears the BIOS

such that the next time you start the PC,

the CMOS does not ask for any password.

Now if you are able to bring the DOS prompt up,

then you will be able to

change the BIOS setting to the default.

To clear the CMOS do the following:

Get DOS prompt and type:

DEBUG hit enter

-o 70 2e hit enter

-o 71 ff hit enter

-q hit enter

exit hit enter

Restart the computer.

It works on most versions of the AWARD BIOS.

Accessing information on the hard disk

When you turn on the host machine,

enter the CMOS setup menu

(usually you have to press F2, or DEL,

or CTRL+ALT+S during the boot sequence)

and go to STANDARD CMOS SETUP,

and set the channel to which you have

put the hard disk as TYPE=Auto,

MODE=AUTO, then SAVE ; EXIT SETUP.

Now you have access to the hard disk.

Standard BIOS backdoor passwords

The first, less invasive,

attempt to bypass a BIOS password

is to try on of these standard

manufacturer' s backdoor passwords:

AWARD BIOS

AWARD SW, AWARD_SW,

Award SW, AWARD PW, _award,

awkward, J64, j256, j262, j332, j322,

01322222, 589589, 589721, 595595, 598598,

HLT, SER, SKY_FOX, aLLy, aLLY, Condo,

CONCAT, TTPTHA, aPAf, HLT, KDD,

ZBAAACA, ZAAADA, ZJAAADC,

djonet, %шесть пpобелов%, %девять пpобелов%

AMI BIOS

AMI, A.M.I., AMI SW, AMI_SW, BIOS, PASSWORD,

HEWITT RAND, Oder

Other passwords you may try

(for AMI/AWARD or other BIOSes)

LKWPETER, lkwpeter, BIOSTAR, biostar,

BIOSSTAR, biosstar, ALFAROME, Syxz, Wodj

Note that the key

associated to "_" in the US keyboard corresponds to "?"

in some European keyboards

(such as Italian and German ones),

so -- for example --

you should type AWARD?SW

when using those keyboards.

Also remember that passwords are Case Sensitive.

The last two passwords in the

AWARD BIOS list are in Russian.

Flashing BIOS via software

If you have access to the computer

when it's turned on,

you could try one of those programs

that remove the password from the BIOS,

by invalidating its memory.

However, it might happen

you don't have one of those programs

when you have access to the computer,

so you'd better learn how to do manually

what they do.

You can reset the BIOS

to its default values using the MS-DOS tool DEBUG

(type DEBUG at the command prompt.

You'd better do it in pure MS-DOS mode,

not from a MS-DOS shell window in Windows).

Once you are in the debug environment

enter the following commands:

AMI/AWARD BIOS

O 70 17

O 71 17

Q

PHOENIX BIOS

O 70 FF

O 71 17

Q

GENERIC

Invalidates CMOS RAM.

Should work on all AT motherboards

(XT motherboards don't have CMOS)

O 70 2E

O 71 FF

Q

Note that the first letter is a

"O" not the number "0".

The numbers which follow are two bytes in hex format.

Flashing BIOS via hardware

If you can't access the computer

when it's on,

and the standard backdoor passwords didn't work,

you'll have to flash the BIOS via hardware.

Please read the important notes

at the end of this section

before to try any of these methods.

Using the jumpers

The canonical way to flash

the BIOS via hardware is to plug,

unplug, or switch a jumper on the motherboard

(for "switching a jumper"

I mean that you find a jumper that

joins the central pin and

a side pin of a group of three pins,

you should then unplug the jumper

and then plug it to the central pin

and to the pin on the opposite side,

so if the jumper is normally on position 1-2,

you have to put it on position 2-3,or vice versa).

This jumper is not

always located near to the BIOS,

but could be anywhere on the motherboard.