Guide BYPASS BIOS passwords..

jayken · Oct 15, 2006

Cool Post Man :hap2:

TheMask · Oct 15, 2006

Ari_JAI, its unethical to copy-paste articles off the internet. If u have not written the article, urself, mention its source.

cyrux · Oct 15, 2006

Unless this thing helps me, i dont care about the source, may be the direct source got it from another source..

Arihant.EXE · Oct 15, 2006

i got it frm here ht tp://labmice .techtarget.com/articles/BIOS_hack.htm

but i dont know as cyrux said where was the original article i searched it on google and got tons of result can u tell wat to do in that case ????????

TheMask · Oct 15, 2006

cyrux said:
Unless this thing helps me, i dont care about the source, may be the direct source got it from another source..

U may not care about the source, but the simple fact remains that posting an article without giving due credit to the author / source amounts to plagiarism. And we at TE dont entertain plagiarism!

Ari_JAI said:
i got it frm here ht tp://labmice .techtarget.com/articles/BIOS_hack.htm
but i dont know as cyrux said where was the original article..

next time, post the link where u picked up the article from. Thats sufficient.

iosoft · Oct 15, 2006

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

No need to use them.... :no:

When I was in the 1st year of MCA and mad about C programming and its power like TSRs, DOS VIRUS, Low Level Programming etc. I learnt a 3 Line C-Code to clear just the password of the BIOS.

Line one was the add ing the 'Header File'.
Line two creating a Register type variable and assign a special value.
Execute it through a low level system call by passing the variable.

But after learning so much things like OS, VB, SQL, JAVA etc I just forget it.
Can't recall it at all. :Comp3:

EDIT: Hay, I found the CODE, time to DISCO :hap2:

Code:

#include<dos.h>

// the main code block
{
_outp(0x70,0x2E);   //password will get cleared
_outp(0x71,0xFF);
}

Another Procedure is -

Code:

[U]Solution 1: for AMI and Award BIOSs:[/U]

C:\DEBUG (at a clear DOS prompt, don't do this in DOS-box in Windows)
-O 70 17
-O 71 17
Q

[U]Solution 2: for Phoenix BIOSs:[/U]

C:\DEBUG (at a clear DOS prompt, don't do this in DOS-box in Windows)
-O 70 FF
-O 71 17
Q

Deathbearer · Oct 16, 2006

iosoft said:
No need to use them.... :no:

When I was in the 1st year of MCA and mad about C programming and its power like TSRs, DOS VIRUS, Low Level Programming etc. I learnt a 3 Line C-Code to clear just the password of the BIOS.

Line one was the add ing the 'Header File'.

Line two creating a Register type variable and assign a special value.

Execute it through a low level system call by passing the variable.

But after learning so much things like OS, VB, SQL, JAVA etc I just forget it.
Can't recall it at all. :Comp3:

EDIT: Hay, I found the CODE, time to DISCO :hap2:

Code:

#include<dos.h> // the main code block { _outp(0x70,0x2E); //password will get cleared _outp(0x71,0xFF); }

Another Procedure is -

Code:

[U]Solution 1: for AMI and Award BIOSs:[/U] C:\DEBUG (at a clear DOS prompt, don't do this in DOS-box in Windows) -O 70 17 -O 71 17 Q [U]Solution 2: for Phoenix BIOSs:[/U] C:\DEBUG (at a clear DOS prompt, don't do this in DOS-box in Windows) -O 70 FF -O 71 17 Q

BTW... i always wanted to ask this............. if u have password protection.... at the bios screen itself........ then how come u will will be able to boot into.... C: Drive (hdd)... as u have mentioned in... ur solution... and start debug???:huh: cause if i cannot give correct password it wont let be boot right??......... if i mwrong correct me... and tell step by step procedure

cybershastri · Oct 18, 2006

^^ Thats precisely what I was wondering.

VinayaK · Oct 21, 2006

thanks a lot dide ... gr8 article

happymark · Oct 17, 2009

A. By Using the Motherboard Jumper:

In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.

Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.

When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.

Make sure to turn the PC off before opening the cabinet and resetting the jumper.

B. By Using Software:
I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds

BIOS/CMOS Password Recovery Tool Service: BIOS Password Recovery - BIOS Password Recovery Tool - Remove or Clear BIOS Password

Guide BYPASS BIOS passwords..

PC enthusiast since MS DOS 5