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Notebook, Laptop, Masa üstü Pc Bios Þifresi sýfýrlama - Masterkey

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    Gönderim Zamanı: 25-01-2008 Saat 23:16
Bios sistemine þifre koydunuz ve unuttunuz pc ye format atýcaksýnýz bios ayarlarýný yapmak için þifre istiyor þifreyi nasýl kýrcaz þimdi onu yazýcam cok kýsa ve basit bi olay!!!
En basýnda pc yi kapatýn kasanýn içini açýn ve orda saat pili gibi ufak bir pil var onu yuvasýndan cýkartýp bi 15 ,20 dk bekletin ve pili takýp pc yi acýn þimdi þifre kýrýlmýstýr ve bios ayarlarýnýzý deðiþtirebilirsiniz!!!Wink
 
 
Ama pc nin fiþini cekmeyi unutmayýn bide saydam eldiven gibi birþey takýn elinize yoksa anakartýnýzý yakarsýnýz tmm


Düzenleyen savage - 25-01-2008 Saat 23:26
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kimden öðrendin lem bunu Big%20smile

Düzenleyen Hawk - 25-01-2008 Saat 23:19
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15 dakika fazla Eksiklik var daha az zamanda yapýlabilir anladýnýz Smile
“Bilginin elde edilmesi... bizi iyiye ulaþtýracaktýr.
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jumpera yapýlýyorda her anakartta yok o olay kral dostum
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evet olabilir ben ole 15,20 dk dedim Smile
 
ben en az 15,20 dk deniyom oluyo ezel abýnýn dediði farklý anakartlarda olabilirSmile


Düzenleyen savage - 25-01-2008 Saat 23:29
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yani demek istediðim CLEAR CMOS  olayý 30 sn de yapýlýyor o yeni anakartlara koyuyolar artýk
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bilgilendirdiðin için tþk abi
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Pilin yakýnýnda 3 pinli clear cmos jumper bulunur . Bios ayarlarýný default deðerlerine almaya yarar bu. Jumperi bulunduðu yerden çýkartýp bir yana takýp bilgisayarýn power tuþuna basýp bir süre sonra elektriði kesin. Jumperi eski yerine takýp bilgisayarý normal açmayý deneyin.

Bu jumper genelde pile yakýn olur ve yanýndada "clear cmos" yazar.
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abi artýk bi + rep verirsin :P

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Hepsinini bir araya toparlayalým
 
- Master keyler ile þifre sýfýrlana bilir
- Pil çýkararak bir süre beklenir.
- Bios jumper  ile resetlenebilir.  (Bios jumper  ý 1-2 ye takýlýdýr çýkarýp 2-3 e takýlarak makýna çalýþtýrýlýr  ve kapatýlýr sonra tekrar  jumper tekrar 1-2 ye takýlýr.
- Laptoplarda bu pil ve jumper olayý geçerli deðildir.
 
Bazý bios master keyleri
 
AWARD Marka Bioslarýn Master Keyleri

01322222
1EAAh
256256
589589
589721
?award
admin
alfarome
aLLy
aPAf
award
award_?
award.sw
AWARD SW
AWARD_SW
AWARD_PW
award_ps
AWARD?SW
awkward
bios
BIOS
biostar
biosstar
CONCAT
CONDO
condo
djonet
efmukl
g6PJ
h6BB
HELGA-S
HEWITT RAND
HLT
j09F
j256
j262
j322
j64
lkw peter
lkwpeter
PASSWORD
SER
setup
SKY_FOX
SWITCHES_SW
Sxyz
SZYX
t0ch88
t0ch20x
ttptha
TTPTHA
TzqF
wodj
ZAAADA
zbaaaca
zjaaadc
zjaaade


AMI Marka Bioslarýn Master Þifreleri


ami
amidecod
amipswd
AMIPSWD
AMI
A.M.I.
aammii
AMI~
amiami
AMI.KEY
AMISETUP
AMI?SW
AMI!SW
AMI_SW
bios310
BIOSPASS
CMOSPWD
KILLCMOS
589589
ami.kez
ami°
helgasss
HEWITT RAND

Ana Karta Göre Master Þifreleri

Advance Integration: Advance
Amptron: Polrty
AST: SnuFG5
Biostar: Biostar / Q54arwms
Compaq:compaq
Concord: last
CTX International: CTX_123
CyberMax: Congress
Daytek+Daewooaytec/Daewuu
DELL: DELL
Digital Equipment: komprie
Enox: xo11nE
Epox: central
Freetech: Posterie
HP Vectra Serie: hewlpack
IBM: IBM / MBIUO / sertafu
IBMAptiva: press both mousekeys
Iwill: iwill
Jet Way: spoom1
Joss Techn.: 57gbz6 / Technolgi
MachSpeed: sp99dd
Magic-Pro: prost
Megastar: Star
Micron: sldkj754 / xyzall
Micronics: dn_04rjc
M Technology: mMmM
Nimble: xdfk9874t3
Packard Bell: Bell9
QDI: QDI
Quantex: teX1 / xljlbj
Research: Col2ogro2
Shuttle: Spacve
Siemens Nixdorf: SKY_FOX
Speedeasy: lesarot1
SuperMicro: ksdjfg934t
Tiny: Tiny
TMC: BIGO
Toshiba:24Banc81/Toshiba/toshy99
ToshibaLaptops: press left Shiftkey
Vextrec Technology: Vextrec
Vobis: merlin
WIMBIOS v2.10: Compleri
Zenith: 3098z / Zenith
Zeos: zeosx


Bios Þifresi Kýrmak Ýçin Kulllanýlan Klavye Kombinasyonlarý


Del AMI, AWARD
ESC Toshiba
F1 Toshiba, Phoenix ve Eski PS/1 Modelleri Ýçin
F2 NEC, Dell
F10 Compaq
Ins IBM PS/2s
twice Reset Dell
Alt+Return Dell
Alt+"?" some PS/2-Models
Ctrl+Esc Genel
Ctrl+Ins some PS/2-Models
Ctrl+Alt+Esc AST Advantage, Award, Tandon
Ctrl+Alt+"+" General
Ctrl+Alt+S Phoenix
Ctrl+Alt+Ins Zenith, Phoenix
Ctrl+S Phoenix
Ctrl+Shift+Esc Tandon 386er
Ctrl+Shift+Alt +Del(num.Keypad) Olivetti PC Pro
Setupdisk Compaq, Epson, IBM, Toshiba, 286er
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tþk biraz daha bilgi toplamýs oldum
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Notebook, Laptop, Bios  þifre kýrma, bios þifre sýfýrlama, Bios Master key hakkýnda genel bilgiler
 
 
Biosa konulan þifreler çeþidine ve yetkilendirmelerine göre yapacaðýmýz iþlemleri kýsýtlarlar. Bu þifreleri unutmamýz halinde ise bazýlarý sadece bios ekranýna girmemize yasaklarken, bazýlarýda iþletim sistemine geçmeden ekrana gelerek bilgisayarlarý çalýþamaz hale getirebilirler. Bu þifreleri sýfýrlama ve kaldýrma iþlemlerini sýralamak istersek :

1) BIOS üreticisinin standart Þifresi ile laptop bios þifresi sýfýrlama
2) Yazýlým ile notebook bios þifresi resetleme
3) Donaným ile laptop bios reset
4) Laptop üreticisinin çözüm metodlarýyla
laptop bios þifresi sýfýrlama

1) BIOS üreticisinin standart Þifreleri ile Sýfýrlama Laptop Bios Þifresi Sýfýrlama :


Bir çok bios üreticisi bu tür durumlara karþýn ürettikleri bioslarda standart bir þifre kullanarak kullanýcýlarýnýn bu tür olaylarda bios þifresini sýfýrlamaya olanak tanýr. Bu þifreler üreticilerin ürettikleri bioslara göre farklýlýk gösterebilir. Aþaðýda ki listede bazý bios üretici markalarýnýn standart sýfýrlama þifreleri vardýr. Sizde biosunuzun markasýna göre bu þifreleri deneyebilirsiniz.

Önemli NOT : Bazý Bios Þifreleme sistemleri sadece 3 þifre girme hakký tanýrlar ve bu 3 þifre girme iþleminden sonra sistemi tamamen kitlerler. Böyle bir olayla karþýlaþmak istemiyorsanýz bu iþleme baþlamadan önce ilk olarak anakartýnýzýn üreticisinin manuelini okuyun.

AMI Bios Standart Sýfýrlama Þifreleri :

.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI ve PASSWORD.

Award Bios Standart Sýfýrlama Þifreleri :

Award marka bioslarýn þifreleri 8 basamaktan oluþmaktadýr. 1322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA ve ZJAAADC.

Phoenix Bios Standart Sýfýrlama Þifreleri :

BIOS, CMOS, phoenix and PHOENIX.

 
Diðer Markalar için Bios Standart Sýfýrlama Þifreleri :
 
 


2) Yazýlým Ýle Bios Þifresi Sýfýrlama Notebook Bios Þifresi Sýfýrlama :


Bütün sistemlerin þifreleri mutlaka bilgisayarýn bir yerlerinde muhafaza edilir. Eðer unuttuðunuz bios þifresi laptobýnýzý açmaya izin veriyorsa, bios þifrenizi öðrenebilirsiniz. Bios þifresinin muhafaza edildiði yeri biliyorsanýz burayý sýfýrlayabilirsiniz veya bu iþlemi yapacak bir program kullanabilirsiniz.

0x371 portundan CMOS bellekteki byte i belirten bir program yazarak unuttuðunuz bios þifresini okuyabilirsiniz. Bu program ile IBM, American Megatrends Inc, Award ve Phoenix marka bioslarýn koyduðunuz þifreleri dos ortamýnda sýfýrlayabilirsiniz.

Bu programla da aþaðýdaki marka bioslarý sýfýrlayabilirsiniz :

  • ACER/IBM BIOS
  • AMI BIOS
  • AMI WinBIOS 2.5
  • Award 4.5x/4.6x/6.0
  • Compaq (1992)
  • Compaq (New version)
  • IBM (PS/2, Activa, Thinkpad)
  • Packard Bell
  • Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
  • Phoenix 4 release 6 (User)
  • Gateway Solo - Phoenix 4.0 release 6
  • Toshiba
  • Zenith AMI

Bu iso dosyasý ile de baþlangýç cd si hazýrlayabilirsiniz. Bu cd ile dos ortamýnda içindeki bios sýfýrlama programlarý ile þifrenizi sýfýrlamayý deneyebilirsiniz.

 

3) Donaným ile Bios Þifresi Sýfýrlama Laptop Bios Reset :

 

Eðer laptobýnýzý açtýðýnýzda bilgisayarýnýz baþlamadan bios ekranýnda þifre ister þekilde kalýyorsa, þifreyi sýfýrlamanýn bir yolu da donaným ile sýfýrlamaktýr. Yukarda da bahsettiðimiz gibi bios þifreleri CMOS belleðinde depolanýr. Bu bellek bilgisayar kapatýlýp gücü kesildiðinde ufak bir pin sayesinde çalýþýr. Eðer biz bilgisayarý güçten kesip bu pini de devre dýþý býrakabilirsek CMOS belleðinin üzerindeki tüm bilgiler sýfýrlanýr(bios þifresi dahil). Tabi ki öncelikle bu iþlemi gerçekleþtirmek için laptobýmýzýn anakartýnda ki bu CMOS belleðine güç saðlayan pinin enerjisini kesecek doðru jumperlarý bulmalýyýz. Her marka ve modele göre bu jumperlarýn yerleri deðiþmektedir. Bu yüzden laptobýnýzýn anakartýnýn manuel kitapcýðýný bulup, cmos pininin jumper yerlerini öðrenmelisiniz. Deminde bahsettiðimiz üzere her laptop üretici firmasý bios þifre sýfýrlama da kendilerine has zorluklar belirlemiþlerdir. Kimisi CMOS pinine kýsa devre yaptýrýrken kimisi de jumper veya saat pili gibi bileþenler kullanmýþlardýr.

 

4) Laptop Üreticisinin Çözüm Metodlarýyla Laptop Bios Þifre Sýfýrlama :

 

Toshiba Bios Þifre Sýfýrlama :

Keydisk dos programýný deneyin.

Bazý Toshiba laptop modellerinde de laptop açýlýþýnda sol shift tuþuna basýlý tutarak bios þifre ekranýný geçebilirsiniz.

IBM Aptiva Bios Þifre Sýfýrlama :

Bazý IBM Aptiva modelleri açýlýþý sýrasýnda mouse'a devamlý basýlarak bios þifre ekraný geçilebilir.

Dell Latitude Bios Þifre Sýfýrlama :

Bu program sayesinde laptobýnýzýn altýnda bulanan servis nosunu girerek bios master þifrenizi öðrenip sýfýrlayabilirsiniz.

Alýntýdýr


Düzenleyen invertor - 29-06-2010 Saat 22:35
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Dökümanlara devam ediyoruz

 
RESET BIOS PASSWORD DELL LAPTOP

DESKTOP TOSHIBA IBM COMPAQ AND

OTHER
 
 

Bios password are used to secure your desktop and latop computer by preventing user from changing your bios setting or acessing to your computer while u are away.there is too type of password protection

the first one is bios setup protection:to prevent user from changing bios setting

thesecond one  system proetction:to make the system unbootable intel entring the password.

but sometime user can forget their password or even wrose they can get infected by bios Backdoor verus.so sending back the unit for reset bios is expensive here is some why how to recover or remove u lost bios password

U can start first by mailing your Before hardware manufacturer support  before attempting to bypass the BIOS password on a computer or laptop,  then ask them if there is some bypass security.in the worest case u will not get any answer so here is the type oto follow 

  • 1) u can start by using  a manufacturers backdoor password to access the BIOS

  • 2) there is large range of password cracking software can be also used

  • 3)on of the most efficase way is to reset the bios cmos .just look to the motherboard somewhere near your battery thir should be a jumper placed in two pin.if there is no third pin just take out the jumper then place it back .if there is a thrid jumper just place it in 2-3 possition then back to normal possition .dont forget to fully switch off  your pc or laptop.u can risk of riuning your motherboard if u clear the cmos with powered up motherboard .

  • 4)the second way how to get the bios to default value is by removing the battery .just remove it for 30 min the put it back .again u must fully unplug any power cable during the process

  • by Overloading the keyboard buffer.not alwais working but should help in some case

  • The last way is toUse a professional service

additional note:the data that remined in your hdd is not safe when u place a password for system setup .anyone how have a physic acess to your computer or laptop can easly get data stored in your hdd using another system.the only exception is to laptop from IBM there is a possiblity to lock hard drive if the supervisor password is enabled.in case where the supervisor password is reset without resetting the and hard drive password as well, you will be unable to access the data .

Backdoor passwords

Note:There is some bios That will fully lock the system when u type a wrong password 

more than three time so please be carefful when entring those password and read 

your bios manufacture documentation before making any change 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 d8on 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 PW j332 TTPTHA
AWKWARD j322
awkward

 

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 LKWPETER
BIOSTAR lkwpeter
biostar setup
biosstar SETUP
CMOS Syxz
cmos 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

To bypass the bios password in some desktop and Most Toshiba laptops systems left shift key is held down during boot.just try this keyboard combinition as start and the result

IBM APTIVA BIOS

Press both mouse buttons repeatedly during the boot

Password cracking software

Here 3 of the most used software to crack or reset the system bios password.those utitility are not licenced by your motherboard manufacturer so using them will be at your own risk.there are some that can recover the password by brute forcing than display it to your screen.other software will just use assembly for award algoritme and then try to find out the cureent password.and last type by overflooding the bios

 

Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings

many motherboard are using this jumper old one like new.just check the documentation for location and usage info.generally this jumper shuld be located near the bios chip or near the battery.there is usually 3 pin witch two of them covred with this jumper.

1) so first turn of your system

2) unplug the power cable from your psu

3) wait 30 s to be safe and to be sure that motherbard is fully decharged

4) locate the jumper

5) if there is 3 pin : the jumper show be in 1-2 possition remove it to 2-3 position wait few second than place the jumper back .

  -if there in only 2 jumper : it is even easyer just remove the jumer wait  few second then plae it back

6) place your psu cable back then power your system and you are done

This procedure abrove are most used with desktop computer for laptop it is even easyer the the dipswitches "used to clear the cmos" is located under the keyboard or in the botton.just check your documentation or contact your laptop manufacturer if u cant find this switches.

Removing the CMOS Battery

removing the battery is the step that u should fellow if the jumper switch that is used abrove did not help the get the password rest.

a quike overlook to the motherboard and u can easly find where u battery is placed .generaly is a sqaure battery.

lets process the step.

1) Turn of your system

2) unplug the psu cable remenber that u can burn your motherboard if the power still pluged while u are removing the battery

3) take the battery out .be carefull when removing it to not break anything.just note how the battery was placed.u need to put back later :-)

4) wait about 30 min in some case u should wait more"up to 24 hours" but generally 30 min if enough to get the bios setting rest

5) place the battery back please note how the battery was placed .placing it in wrong why can drive it to explose.

6)plug your power cable and power u your system

Note: that all previews setting will rest to default one.exemple hdd boot priority,memory setting etc... u should reconfigure them back if u had made change before.

some battery come soldered onto the mathboard then it will be harder to remove it u will need so soldeing skills.

new laptop store the password without requiring a contunious power .so rmoving the battery should not help in this case

IBM based system use special jumper to rest the bios password .again just check the documentation for additonal info

bios password recovery Win 89 tick

Yes, you can crack this password if that is not set as Power on password ( the one which prompts right when you start the machine ).

If you are still able to boot into Windows do this:

Restart in Ms-DOS mode

Type DEBUG
Press Enter
Type O 70 18
Press Enter
Type O 71 FF
Press Enter
Type Q
Press Enter
Power the system off and on by unplugging and re-plugging the system into the power outlet

Overloading the KeyBoard Buffer

U can overload the keyboard buffer isn old system .sor exemple:hitting the " ESC " key many time rapidly. u can also try the " INSERT " + " DELETE " tick.just start rapidely pushing those two key repectively just after powering the system.and the last known keyboard tick using the "ESCAPE" "F1" it may work with the principe in some motherboard

Jumping the Solder Beads on the CMOS

An additional way consist on connecting or skeeping some specific solder beads on the chipset.be carrefull u can easly broke the motherboard if u make a wrong connection or a wrong skeep,u can check the manufacturer documentation on this or  just contact them and ask.this technique is for advanced user and usually used as last try

Using a professional service

using a professional service. like  Password Crackers, Inc.,  it offers many  services for desktop and laptop computers the cost usually is between $100 and $400.

dell laptop reset bios password

u will be asked for proof to be the owner of this laptop or desktop THere was  many of question regarding how to rest bios password for dell laptop but the answer can be one of those abrove solution.

Aditional type for DELL: U can give ac power & barry & then by prassing the CONTROL+ALT+E KEY THEN POWER ON THE SYSTEM & CHECK.



Düzenleyen invertor - 29-06-2010 Saat 22:39
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HOW TO BYPASS BIOS PASSWORDS
by Elf Qrin (http://www.ElfQrin.com)
v2.24 r03Sep2000-13aug2004
First Release: r25Mar2000
The latest version of this document can be found at
http://www.ElfQrin.com/docs/biospw.html


The aim of this article is to explain how to bypass BIOS passwords. By reading this article you should realize you can't rely on BIOS passwords if you need to secure your computer.


Accessing information on the hard disk

May be you don't actually need to access the computer, but you only need to access the information contained on the hard disk. In this case it could be more convenient to remove it temporarely from that machine and put it as a secondary hard disk on another machine, that you'll use as a host to retrieve data.
Before to put the hard disk on the host machine, set its jumper according to the EIDE channel to which you are connecting it (master, slave, or stand alone). Each disk drive has its own configuration, but it's usually explained on a sticker on the top. Take note of the original position of the jumper first, to set it back when you'll have to put the hard disk back to the original machine.
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, %øåñòü ïpîáåëîâ%, %äåâÿòü ïpîáåëîâ%

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

<FONT size=2>O 70 17 O 71 17 Q </FONT>

PHOENIX BIOS

<FONT size=2>O 70 FF O 71 17 Q </FONT>

GENERIC
Invalidates CMOS RAM.
Should work on all AT motherboards
(XT motherboards don't have CMOS)

<FONT size=2>O 70 2E O 71 FF Q </FONT>

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 viceversa). This jumper is not always located near to the BIOS, but could be anywhere on the motherboard.
To find the correct jumper you should read the motherboard's manual.
Once you've located the correct jumper, switch it (or plug or unplug it, depending from what the manual says) while the computer is turned OFF. Wait a couple of seconds then put the jumper back to its original position. In some motherboards it may happen that the computer will automatically turn itself on, after flashing the BIOS. In this case, turn it off, and put the jumper back to its original position, then turn it on again. Other motherboards require you turn the computer on for a few seconds to flash the BIOS.
If you don't have the motherboard's manual, you'll have to "bruteforce" it... trying out all the jumpers. In this case, try first the isolated ones (not in a group), the ones near to the BIOS, and the ones you can switch (as I explained before). If all them fail, try all the others. However, you must modify the status of only one jumper per attempt, otherwise you could damage the motherboard (since you don't know what the jumper you modified is actually meant for). If the password request screen still appear, try another one.
If after flashing the BIOS, the computer won't boot when you turn it on, turn it off, and wait some seconds before to retry.

Removing the battery

If you can't find the jumper to flash the BIOS or if such jumper doesn't exist, you can remove the battery that keeps the BIOS memory alive. It's a button-size battery somewhere on the motherboard (on elder computers the battery could be a small, typically blue, cylinder soldered to the motherboard, but usually has a jumper on its side to disconnect it, otherwise you'll have to unsolder it and then solder it back). Take it away for 15-30 minutes or more, then put it back and the data contained into the BIOS memory should be volatilized. I'd suggest you to remove it for about one hour to be sure, because if you put it back when the data aren't erased yet you'll have to wait more time, as you've never removed it. If at first it doesn't work, try to remove the battery overnight.
Important note: in laptop and notebooks you don't have to remove the computer's power batteries (which would be useless), but you should open your computer and remove the CMOS battery from the motherboard.

Short-circuiting the chip

Another way to clear the CMOS RAM is to reset it by short circuiting two pins of the BIOS chip for a few seconds. You can do that with a small piece of electric wire or with a bended paper clip. Always make sure that the computer is turned OFF before to try this operation.
Here is a list of EPROM chips that are commonly used in the BIOS industry. You may find similar chips with different names if they are compatible chips made by another brand. If you find the BIOS chip you are working on matches with one of the following you can try to short-cicuit the appropriate pins. Be careful, because this operation may damage the chip.

CHIPS P82C206 (square)

Short together pins 12 and 32 (the first and the last pins on the bottom edge of the chip) or pins 74 and 75 (the two pins on the upper left corner).

       gnd
       74
        |__________________
5v 75--|                   |
       |                   |
       |                   |
       |       CHIPS       |
   1 * |                   |
       |      P82C206      |
       |                   |
       |                   |
       |___________________|
        |                 |
        | gnd             | 5v
        12                32

OPTi F82C206 (rectangular)

Short together pins 3 and 26 (third pin from left side and fifth pin from right side on the bottom edge).

    80              51
     |______________|
81 -|                |- 50
    |                |
    |                |
    |      OPTi      |  
    |                |
    |     F82C206    |
    |                |
100-|________________|-31
     ||           | |
   1 ||           | | 30
      3           26


Dallas DS1287, DS1287A
Benchmarq bp3287MT, bq3287AMT

The Dallas DS1287 and DS1287A, and the compatible Benchmarq bp3287MT and bq3287AMT chips have a built-in battery. This battery should last up to ten years. Any motherboard using these chips should not have an additional battery (this means you can't flash the BIOS by removing a battery). When the battery fails, the RTC chip would be replaced.
CMOS RAM can be cleared on the 1287A and 3287AMT chips by shorting pins 12 and 21.
The 1287 (and 3287MT) differ from the 1287A in that the CMOS RAM can't be cleared. If there is a problem such as a forgotten password, the chip must be replaced. (In this case it is recommended to replace the 1287 with a 1287A). Also the Dallas 12887 and 12887A are similar but contain twice as much CMOS RAM storage.

         __________
     1 -| *  U     |-  24 5v
     2 -|          |-  23
     3 -|          |-  22
     4 -|          |-  21 RCL (RAM Clear)
     5 -|          |-  20
     6 -|          |-  19
     7 -|          |-  18
     8 -|          |-  17
     9 -|          |-  16
    10 -|          |-  15                            
    11 -|          |-  14
gnd 12 -|__________|-  13

NOTE: Although these are 24-pin chips,
the Dallas chips may be missing 5 pins,
these are unused pins.
Most chips have unused pins,
though usually they are still present.


Dallas DS12885S
Benchmarq bq3258S
Hitachi HD146818AP
Samsung KS82C6818A

This is a rectangular 24-pin DIP chip, usually in a socket. The number on the chip should end in 6818.
Although this chip is pin-compatible with the Dallas 1287/1287A, there is no built-in battery.
Short together pins 12 and 24.

 5v
 24          20                   13
 |___________|____________________|
|                                  |
|             DALLAS               |
|>                                 |
|            DS12885S              |
|                                  |
|__________________________________|
 |                                |
 1                                12
                                  gnd


Motorola MC146818AP

Short pins 12 and 24. These are the pins on diagonally opposite corners - lower left and upper right. You might also try pins 12 and 20.

          __________
     1  -| *  U     |-  24 5v
     2  -|          |-  23
     3  -|          |-  22
     4  -|          |-  21
     5  -|          |-  20
     6  -|          |-  19
     7  -|          |-  18
     8  -|          |-  17
     9  -|          |-  16
    10  -|          |-  15
    11  -|          |-  14
gnd 12  -|__________|-  13

Replacing the chip

If nothing works, you could replace the existing BIOS chip with a new one you can buy from your specialized electronic shop or your computer supplier. It's a quick operation if the chip is inserted on a base and not soldered to the motherboard, otherwise you'll have to unsolder it and then put the new one. In this case would be more convenient to solder a base on which you'll then plug the new chip, in the eventuality that you'll have to change it again. If you can't find the BIOS chip specifically made for your motherboard, you should buy one of the same type (probably one of the ones shown above) and look in your motherboard manufacturer's website to see if there's the BIOS image to download. Then you should copy that image on the chip you bought with an EPROM programmer.

Important

Whether is the method you use, when you flash the BIOS not only the password, but also all the other configuration data will be reset to the factory defaults, so when you are booting for the first time after a BIOS flash, you should enter the CMOS configuration menu (as explained before) and fix up some things.
Also, when you boot Windows, it may happen that it finds some new device, because of the new configuration of the BIOS, in this case you'll probably need the Windows installation CD because Windows may ask you for some external files. If Windows doesn't see the CD-ROM try to eject and re-insert the CD-ROM again. If Windows can't find the CD-ROM drive and you set it properly from the BIOS config, just reboot with the reset key, and in the next run Windows should find it. However most files needed by the system while installing new hardware could also be found in C:\WINDOWS, C:\WINDOWS\SYSTEM, or C:\WINDOWS\INF .


Key Disk for Toshiba laptops

Some Toshiba notebooks allow to bypass BIOS by inserting a "key-disk" in the floppy disk drive while booting. To create a Toshiba Keydisk, take a 720Kb or 1.44Mb floppy disk, format it (if it's not formatted yet), then use a hex editor such as Hex Workshop to change the first five bytes of the second sector (the one after the boot sector) and set them to 4B 45 59 00 00 (note that the first three bytes are the ASCII for "KEY" :) followed by two zeroes). Once you have created the key disk put it into the notebook's drive and turn it on, then push the reset button and when asked for password, press Enter. You will be asked to Set Password again. Press Y and Enter. You'll enter the BIOS configuration where you can set a new password.


Key protected cases

A final note about those old computers (up to 486 and early Pentiums) protected with a key that prevented the use of the mouse and the keyboard or the power button. All you have to do with them is to follow the wires connected to the key hole, locate the jumper to which they are connected and unplug it. That's all.



Düzenleyen invertor - 29-06-2010 Saat 22:43
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How To Clear Your Toshiba Bios Password

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This Toshiba bios password removal process is meant for use on Toshiba laptops that you own or have had permission from the rightful owner to remove the password. If any of these processes are done incorrectly it may result in complete system failure or permanent system damage (you've been warned!).


Some Toshiba bios passwords can be reset using the Key Disk.exe utility, to do this you need a 1.44Mb floppy disk. Format the disk using Windows and then with a hex editor, change the first five bytes of the second sector to 4B 45 59 00 00.

Then put the floppy into your machine and boot it up, you'll be asked for a password, just press Enter. Then when you're asked to set the password, type Y then Enter, this will get you into the bios configuration where you can then type in a new password.

Aside from the KeyDisk, you can build a parallel Loopback plug, this is a simple device that plugs into the parallel port of the machine and removes the password when you boot it up.

To make it you will need a 25 pin DB25 plug, take the plug apart and join these pins using some old cable;
Pins: 1-5-10, 2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15, and 18-25

BD25%20Loopback%20Configuration



Plug it into your parallel port and boot up your machine, the password should be removed as soon as it boots.

Note: This will work on majority of older Toshiba's (1995 – 2002) and obviously only ones that have a parallel port.

CG Security

CG Security have a utility available that claims to work for a range of Toshiba bios passwords as well as the following machines;

  • ACER/IBM BIOS
  • AMI BIOS
  • AMI WinBIOS 2.5
  • Award 4.5x/4.6x/6.0
  • Compaq (1992)
  • Compaq (New version)
  • IBM (PS/2, Activa, Thinkpad)
  • Packard Bell
  • Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
  • Phoenix 4 release 6 (User)
  • Gateway Solo - Phoenix 4.0 release 6
  • Toshiba
  • Zenith AMI

The utility also has the ability to restore, backup and erase/kill cmos. There is also some info about generic passwords for Award motherboards.

Check it out at CGI Security

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Toshiba Bios Password Deletion

Satellite P100 & Satellite Pro P100

With notebook turned off;

  • Open Wi-Fi Cover
  • Remove Mini Card Wi-Fi card
  • Locate & Short Out JP8 for 5 Seconds
  • Remove short and turn on
  • NO BOOT
  • Press & Hold Power button to turn off
  • Turn on again & password is cleared

Satellite L10, L20, L30 & Satellite Pro L20

With notebook turned off;

  • Open Wi-Fi Cover
  • Locate & Short Out JP1 for 15 Seconds
  • (Satellite L10)
  • Satellite L20/Pro L20 short out G1

Satellite M100 & Tecra A6

With notebook turned off;

  • Open Memory Cover
  • Remove Memory
  • Remove Black plastic insulation
  • Locate & Short CMOS CLR1 for 15 Seconds

NOTE:
All the following models use the same password removal process.

Satellite: 17xx Series, 1000, 1110,1130, 1200, 1900, 2430, 3000 P20,P30, P33, A30, A70, A80, M40X, M50,M60, M70, M100

Tecra A3/S2, A5, A6

  • The jumper is always located under or near the memory modules
  • Depending on the model the jumper could be labelled J1, J2, J5, J7, J9 or CMOS CLR1 (M100 & A6)

Satellite A100 & Tecra A7

  1. Remove Strip cover
  2. Remove 2 x K/B screws
  3. Move K/B Unit up but don’t disconnect
  4. Release & Remove Mini Card Wi-Fi Card
  5. Locate & short C88 Pin 1 & 2 together
  6. Power on Machine while still shorting Pin 1 & 2
  7. As soon as the TOSHIBA logo appears, remove short
  8. If machine boots, Password has been removed
    • Satellite A100 (PSAA2A-02C01N)

      1. Remove Memory Cover from base of machine
      2. Release & remove right side Memory Module
      3. Lift black plastic insulation
      4. Locate & short PAD500 Pin 1 & 2 together
      5. Power on machine while still shorting Pin 1 & 2
      6. As soon as the TOSHIBA logo appears, remove short
      7. If machine boots, password has been removed

      TECRA A4 & Satellite M40

      1. Open modem & Wi-Fi card cover
      2. Remove mini PCI Wi-Fi card
      3. Lift up black plastic
      4. Locate & short C738 Pin 1 & 2 together
      5. Power on machine while still shorting Pin 1 & 2
      6. As soon as the TOSHIBA logo appears, remove short
      7. If machine boots, password has been removed

      TECRA S1

      1. Open palm rest cover
      2. Remove mini PCI Wi-Fi card
      3. Lift up black plastic
      4. Locate & short C5071 Pin 1 & 2 together
      5. Power on machine while still shorting Pin 1 & 2
      6. As soon as the TOSHIBA logo appears, remove short
      7. If machine boots, password has been removed

      TE 2300

      1. Remove 2 x B12 screws from bottom of system
      2. Remove strip cover
      3. Remove keyboard screws 1 x B2.5 & 1 x SF4
      4. Remove 1 x 4mm screw & Wi-Fi cover
      5. Remove mini PCI Wi-Fi card if fitted
      6. Locate & short points as shown in picture below
      7. Power on machine while still shorting points
      8. Short for 5 seconds
      9. Nothing will appear on the screen
      10. Turn system off holding down power button
      11. Password is now removed


      TE2300%20Motherboard



      Satellite A60
      1. Open Wi-Fi slot cover
      2. Lift up black plastic
      3. Locate & short C561 Pin 1 & 2 together
      4. Power on machine while still shorting Pin 1 & 2
      5. As soon as the TOSHIBA logo appears, remove short
      6. If machine boots, password has been removed

      If you need your Toshiba bios password removed and your model is not listed above then chances are it's a procedure that can only be done at an authorised repair centre.

       

       


    Düzenleyen invertor - 29-06-2010 Saat 22:47
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