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Reset bios password of acer aspire 4710

I reset the cmos battery in a few minutes then i try also the backdoor password,e.g. cmos,bios,phoenix and PHOENIX but the password still there in bios...kindly give me another option for this problem

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  • audyn_ip Mar 22, 2009

    i have remove my cmos battery for one minute, but the bios password still work... i'm looking for near the cmos but i can't find/i don't know where the pin jumper...how to disable bios password..?? how long time of remove the battery to reset bios password?? (my laptop acer aspire 4710Z the battery near pci card)

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This is the only way to do it.
http://www.cgsecurity.org/wiki/CmosPwd


Please rate this fixya solution

Posted on Jan 22, 2009

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Dell vostro a860 bios password


The best method to reset a BIOS password depends on what BIOS the computer has. Common BIOS's include AMI, Award, IBM and Phoenix. Numerous other BIOS's do exist, but these are the most common.

Some BIOS's allow you to require a password be entered before the system will boot. Some BIOS's allow you to require a password to be entered before the BIOS setup may be accessed.

The general categories of solutions to reset a BIOS password are:

* Using a Backdoor BIOS Password
* Resetting the BIOS Password using Software
* Resetting the BIOS Password using Hardware
* Vendor Specific Solutions for resetting the BIOS Password

Using a Backdoor BIOS Password

Some BIOS manufacturers implement a backdoor password. The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.
AMI Backdoor BIOS Passwords

Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.
Award Backdoor BIOS Passwords

One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 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, and ZJAAADC.
Phoenix Backdoor BIOS Passwords

Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.
Backdoor BIOS Passwords from Other Manufacturers

Reported BIOS backdoor passwords for other manufacturers include:

Manufacturer BIOS 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
SOYO SY_MB
TMC BIGO
Toshiba Toshiba

Remember that what you see listed may not be the actual backdoor BIOS password, this BIOS password may simply have the same checksum as the real backdoor BIOS password. For Award BIOS, this checksum is stored at F000:EC60.
Resetting the BIOS Password using Software

Every system must store the BIOS password information somewhere. If you are able to access the machine after it has been booted successfully, you may be able to view the BIOS password. You must know the memory address where the BIOS password is stored, and the format in which the BIOS password is stored. Or, you must have a program that knows these things.

You can write your own program to read the BIOS password from the CMOS memory on a PC by writing the address of the byte of CMOS memory that you wish to read in port 0x370, and then reading the contents of port 0x371.

!BIOS will recover the BIOS password for most common BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix.

CmosPwd will recover the BIOS password for the following BIOS versions:

* 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

Resetting the BIOS Password using Hardware

If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard. If you remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.

On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.

If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.

Many RTC's require an external battery. If your RTC is one of this type, you can clear the BIOS password just by unsocketing the RTC and reseating it.

RTC's which require external batteries include:

* Dallas Semiconductor DS12885S
* TI benchmarq bq3258S
* Motorola MC146818AP
* Hitachi HD146818AP
* Samsung KS82C6818A

Most RTC chips with integrated batteries can be reset to clear the BIOS password by shorting two pins together for a few seconds.

You will see more than one option for some chips due to testing by various people in the field. Remember to remove power from the system before shorting these pins.

RTC Chip Pins
Dallas DS1287A
TI benchmarq bp3287AMT 3 (N.C.) and 21 (NC/RCL)
Chips & Technologies P82C206 12 (GND) and 32 (5V)
-or-
74 (GND) and 75 (5V)
OPTi F82C206 3 and 26
Dallas Semiconductor DS12887A 3 (N.C.) and 21 (RCLR)

You should be able to discover how to reset the BIOS password stored in most RTC (Real Time Clock) chips by reading the manufacturers data sheet for that RTC. Some RTC's, like the Dallas DS1287 and TI benchmarq bq3287mt cannot be cleared. The solution to resetting the BIOS password on systems with those RTC's is to purchase a replacement RTC chip. How inconvenient!

Feb 07, 2011 | Dell Vostro A860 Notebook

Tip

How to Reset a BIOS Password.


Desktop Machines.

In desktop machines its very simple.
Just remove the BIOS Battery from the motherboard and place it back after 1mint.

Laptop Machines.

It is some what difficult in laptop machines. Because it is not an eassy job to remove BIOS battery from the mother board. So i'm just explaining some most commen methods.
1. Using a Backdoor BIOS Password

The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.

AMI Backdoor BIOS Passwords Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.
Award Backdoor BIOS Passwords One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 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, and ZJAAADC.
Phoenix Backdoor BIOS Passwords Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.
Backdoor BIOS Passwords from Other Manufacturers Reported BIOS backdoor passwords for other manufacturers include:
Manufacturer BIOS 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 SOYO SY_MB TMC BIGO Toshiba Toshiba Remember that what you see listed may not be the actual backdoor BIOS password, this BIOS password may simply have the same checksum as the real backdoor BIOS password. For Award BIOS, this checksum is stored at F000:EC60.

2. Resetting the BIOS Password using Software :

!BIOS will recover the BIOS password for most common BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix.

CmosPwd will recover the BIOS password for the following BIOS versions:
  • 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
3. Resetting the BIOS Password using Hardware :

If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard. If you remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.
On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.
If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.
Many RTC's require an external battery. If your RTC is one of this type, you can clear the BIOS password just by unsocketing the RTC and reseating it.

4. Vendor Specific Solutions for Resetting the BIOS Password :
Resetting a Dell BIOS Password For information on how to recover a Dell BIOS password, please refer to How do I reset Dell BIOS password?
Resetting a Toshiba BIOS Password KeyDisk will reset the BIOS password on Toshiba laptops.

Some Toshiba's can be convinced to bypass the startup BIOS password if you hold down the <LEFT-SHIFT> key while booting the system.
Resetting an IBM ThinkPad BIOS Password For information on how to recover an IBM Thinkpad BIOS password, please refer to How do I reset an IBM ThinkPad BIOS password?
Resetting an IBM Aptiva BIOS Password Some IBM Aptiva's can be convinced to bypass the startup BIOS password if you press both mouse buttons repeatedly while booting the system.
Resetting an Acer BIOS Password For information on how to recover an Acer BIOS password, please refer to How do I reset an Acer BIOS password?


Thanks & Regards
Current009

on Jun 01, 2010 | PC Laptops

3 Answers

Bios password forgot. how can i reset password


remove cimos battery from motherboard
Insert the battery again

it will remove password form bios

Feb 05, 2011 | Lenovo 3000 C200 Notebook

3 Answers

HOW DO I RESET THE BIOS PASS WORD ON A TOSHIBA LAPTOP L355


Hi if you want reset bios password ( asume you forget it) You need reset bios find reset CMOS jumper or take out battery for few sec. All settings in BIOS will be reset. Let me know if you need more help

Aug 25, 2010 | Toshiba Satellite L355-S7811 Notebook

2 Answers

Acer aspire 2920 bios password removing


The password to by-pass bios password are these, hope they will hope you, once you enter BIOS using these passwords you can reset it to normal
Phoenix Backdoor BIOS Passwords:
  • BIOS
  • CMOS
  • phoenix
  • PHOENIX

Mar 18, 2010 | Acer Aspire 4720 Notebook

3 Answers

Cannot boot laptop because of bios password


Easiest way to wipe clean the Bios password is as follows:
  • Perform a power drain by removing laptop battery pack and/or docking station power supply and hold power button down for 10 seconds
  • Locate the CMOS battery (usually under the smallest panel on the bottom of the laptop)
  • Remove CMOS battery for 20 minutes (20 is arbitrary can wait longer if you wish)
  • Replace CMOS battery and panel
  • Replace battery pack and/or replace to docking station
  • Power up
The Bios password should now be removed and you should be able to boot with no issues. Thank you for using Fixya and please remember to return to rate this answer.
Greg

Nov 17, 2009 | Dell XPS M1330 Notebook

3 Answers

How to reset bios password for xps m1210 dell laptop?


what kind of Bios are you running? Here are some that might help. AMI Backdoor BIOS Passwords Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.
Award Backdoor BIOS Passwords One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 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, and ZJAAADC.
Phoenix Backdoor BIOS Passwords Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.
Backdoor BIOS Passwords from Other Manufacturers Reported BIOS backdoor passwords for other manufacturers include:
Manufacturer BIOS 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 SOYO SY_MB TMC BIGO Toshiba Toshiba Remember that what you see listed may not be the actual backdoor BIOS password, this BIOS password may simply have the same checksum as the real backdoor BIOS password. For Award BIOS, this checksum is stored at F000:EC60.

Oct 31, 2009 | Dell XPS M1210 Notebook

1 Answer

My customer has a gateway p-171x notebook that has a bios setup password he does not know-how can I reset that? I have taken out the battery and it disn't work. It is a Phoenix bios



Sadly, many Gateways models must be returned to the manufacturer to have these passwords reset.
Try A Phoenix Backdoor BIOS Password The reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX. Try one of these passwords and see if they will unlock it.

If that doesn't work, there could be a jumper located under the keyboard if your model has one.

The last thing to try would be to open the unit and remove the CMOS lithium battery to clear it. This is of course a last resort and is not for the weak at heart. You may void the warranty if there is one by doing this, so be careful.

If I think of anything else, I'll let you know. Please reply with the fix if one of these works.

Mike Vail



Oct 05, 2009 | Gateway P-171X FX Edition PC Notebook

1 Answer

How to reset the bios


When you pull the battery it will set your cmos back to factory
defaults.

Do one thing first, Your CMOS holds a lot of important information so before you go messing around with the battery WRITE DOWN YOUR SETTINGS.

There are a few different ways to reset the cmos, here's a few:

1. there are many default common passwords,
such as:

At boot-up note the BIOS provider (Award, AMI, Phoenix, IBM, etc.)

For Award BIOS' try these backdoor passwords:

AWARD_SW
j262
HLT
SER
SKY_FOX
BIOSTAR
ALFAROME
Lkwpeter
j256
AWARD?SW
LKWPETER
syxz
ALLy
589589
589721
awkward
CONCAT
d8on
CONDO
j64
szyx

For AMI BIOS' try these backdoor passwords:

AMI
BIOS
PASSWORD
HEWITT RAND
AMI?SW
AMI_SW
LKWPETER
A.M.I.
CONDO


For PHOENIX BIOS' try this backdoor password:

phoenix

there are too many to count here's a list
http://www.phenoelit.de/dpl/dpl.html
(search for PC BIOS)


2. On some older PC's pressing the insert key upon startup will clear
the CMOS, make sure you hold it down till it's done booting.

3. Another way which we pretty much already covered, was to pull the
metallic nickel looking battery that supplies power to the CMOS.

4. Some times there is a small three pin jumper used to reset the bios,
just move the black little pin cover to the opposite two pins.
(Make sure to read the motherboards manual before this)

5. If the battery is soldered in you can take a soldering iron to it but
I don't recommend it unless you are a professional.

6. there are a few programs out on the net which are made to crack
certain types of bios passwords, I have one for award BIOS's here's a
couple:

http://www.11a.nu/ibios.htm

http://natan.zejn.si/rempass.html

Good reading:
http://www.astalavis...ios_hacking.txt
<http://www.astalavista.com/library/basics/guides/bios_hacking.txt>

http://www.virtualpl.../misc_bios.html


Tools:
http://www.red-demon...pwrecovery.html

Aug 14, 2009 | HP OmniBook XE2 Notebook

3 Answers

I need to reset the bios password on an hp nx9110 notebook - it is an office notebook and noone knows the password!


When you pull the battery it will set your cmos back to factory
defaults.

Do one thing first, Your CMOS holds a lot of important information so before you go messing around with the batteryWRITE DOWN YOUR SETTINGS.

There are a few different ways to reset the cmos, here's a few:

1. there are many default common passwords,
such as:

At boot-up note the BIOS provider (Award, AMI, Phoenix, IBM, etc.)

For Award BIOS' try these backdoor passwords:

AWARD_SW
j262
HLT
SER
SKY_FOX
BIOSTAR
ALFAROME
Lkwpeter
j256
AWARD?SW
LKWPETER
syxz
ALLy
589589
589721
awkward
CONCAT
d8on
CONDO
j64
szyx

For AMI BIOS' try these backdoor passwords:

AMI
BIOS
PASSWORD
HEWITT RAND
AMI?SW
AMI_SW
LKWPETER
A.M.I.
CONDO


For PHOENIX BIOS' try this backdoor password:

phoenix

May 28, 2009 | HP nx9110 Notebook

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