How to hack BIOS Password of laptops

By Partho, Gaea News Network
Friday, February 6, 2009

Gosh! You know it never rains but it pours. Same with me, this morning I lost my IBM ThinkPad’s BIOS(CMOS) password. By jove, I felt never so helpless even with Metro Match(memory games). I’m sure this happens to you as well. Suppose your old employee has left after setting a BIOS password without your knowledge. Resetting this password is not impossible. With a little research I got the hack for the BIOS password.

There can be a number of ways through which you can reset the BIOS password.

Electrical or Static issues

In certain instances there are electrical problems cause the PROM on the motherboard to reset to the Bios(CMOS) to default values. In that case you can try out the default passwords listed below

AMI_SW (case sensitive)

Removing Arbitrary or Revenge Passwords

Now does the passwords in the above mentioned list doesn’t work? Don’t worry, there’s a cool way out of this. There are few more options to try. Try to erase the Bios/CMOS settings and return the Bios to default setting. Now try out the Bios/CMOS passwords listed above. Next reset the password.

Accessing the BIOS Password using Software

As you already know Bios password information is stored somewhere in the system. After successful rebooting, try to access the memory address of the BIOS password and the format in which the BIOS password is stored. You can use a program to access these things.

For better you can write your own program to read the BIOS password from the CMOS memory on a PC. Mention the address of the byte of CMOS memory that you wish to read in port 0×370 and then read the contents of port 0×371.

i) To recover BIOS password of the BIOS versions listed below get to CmosPwd

* 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

ii) To recover the BIOS password for most common BIOS versions such as BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix get to !BIOS.

Resetting BIOS password with Vendor Specific Solutions

With above solutions given, you can still rely on the Vendor Specific Solution for resetting your BIOS password. Here I got the for some of them

How to recover a BIOS password for Dell Laptop?

If you are using a Dell Inspiron, there’s a master password that can clear the BIOS password. For this you’ll have to call the Dell Technical support at (800)624-9896. They would request the Service Tag and Express Service Code provided at the bottom of your Inspiron.¬† For a Dell Latitude you can use the same number.

How to Reset BIOS password on Toshiba laptops?

For the latest Laptops you can reset the BIOS password with the help of KeyDisk (

In case you have a older Toshiba Laptop you can conceive to boot it without power-on BIOS password by attaching a dongle to parallel port that crosses a number of the pins. The pin out is



Give these hacks, still in some Toshiba laptops you can bypass the startup BIOS password by holding down the <LEFT - SHIFT> key when the booting is on.

How to reset BIOS password on IBM ThinkPad laptops?

If you can boot the IBM ThinkPad the you can use the KeyMaker to recover the BIOS password.

If you can boot the IBM ThinkPad the you can use the KeyMaker ( to recover the BIOS password.

In case you cannot boot the only way is to reset the password via hardware.

there can be two situations either the power-on password is set or both the power-on password and supervisor password is set.

In case of the former you can follow the steps below

1. first power off the computer
2. Look for the DIMM cover on the bottom side of the laptop. Remove the cover.
3. Try to short-circuit the two password pads
4. When there’s a short-circuit, power on the computer. Keep waiting until the POST ends.
5. Reinstall the DIMM cover

In case of the later

1.  Press and hold F1 to Power on the laptop
2. Enter the supervisor password. You get the Easy-set up menu.
3. Click on the password icon
4. Click on the Power on icon
5. Enter the supervisor password and press the Space bar.
6. Press Enter twice
7. Exit the setup on restart

How to reset BIOS password on Acer laptop?

If you can boot the Acer

* Click the Start button first
* Click the All Programs menu item
* Click the Empowering Technology menu item
* Click the Acer eSettings Management menu item
* Once inside Acer eSettings Management select the Security button

Acer seems to provide no such assistance for customers with BIOS password issues. So your last resort would be to send them the laptop and pay a $100 fee.

Source: TechFAQ


June 23, 2010: 4:57 pm

hi gays h r u pls i need to help me ..
i have laptop toshiba in said bios i can not open my laptop i need hwo to hacking my bios?

pls help me …


March 24, 2010: 12:50 pm

My Fujitsu siemens Lifebook E8020 has bios password lost, now unable to use it. i tried removing the battery but still encountering the same problem, if i enter 3 time wrong password it starts giving a sound but doesn’t gives any error number display. Needs help.

February 15, 2010: 7:59 am

hi.i want to know my bios password for windows 2003.iam using HP laptop.plz reply me

February 12, 2010: 11:00 am

I password my Compaq (1992)and I forgot my password so I can enter bios setup which means the password is disallowing to enter bios setup….. pls what can I do or if there is any software for me to delete the password…….

January 19, 2010: 4:40 pm

Is there is a BIOS bypass code for a hp 530 Windows vista?

December 29, 2009: 6:57 pm

need to know if there is a BIOS bypass code for a toshiba L515-54925?

Gent Thaqi
August 16, 2009: 12:50 am

For Laptops,

Just take off the battery and put it on again and the BIOS password has been cracked.

June 13, 2009: 9:16 pm

How can i bypass bios password on Alienware m5700i-R2 series?

I have already removed batteries flip’d it upside down . . . didn’t work.

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