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Reset cmos on N550j?

My son set the bios password and forgot it

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  • ASUS Master
  • 27,725 Answers

Restart your computer repeatedly tapping the f8 key to enter safe mode while the screen is black once in safe mode where the only things working will be your keyboard and mouse allowing you to attempt to repair your computer
As the computer is booting repeatadly press the F8 key as the computer is booting

If done properly the user should get to a screen similar to the below screen.
Select the option for Safe mode command prompt only
Windows Advanced Options Menu
Please select an option:
Safe Mode
Safe Mode with Networking
Safe Mode with Command Prompt
Enable Boot Logging
Enable VGA mode
Last Known Good Configuration (your most recent settings that worked)
Directory Services Restore Mode (Windows domain controllers only)
Debugging Mode
Start Windows Normally
Reboot
Return to OS Choices Menu

Use the up and down arrow keys to move the highlight to your choice.

select safe mode with command prompt

Then type at the C:\> prompt: type

DEBUG

and hit Enter. You'll see a dash (-) at the DEBUG prompt. Now type:

o 70 2e

which will show as -o 70 2e at the DEBUG prompt. Hit Enter. Then type:

o 71 ff

and hit Enter.
Finally type:

Quit

and hit Enter one last time to quit DEBUG back to the C:\> prompt.
Now you're ready to reboot your PC, and press the appropriate key or key
combo (look it up in your motherboard manual if you don't know it) to access
your BIOS Setup.

Youll notice the password is gone.

If this fails try typing

At command prompt type debug
you will get a - prompt where you can type the following (<enter> means press enter, not type enter*)

A <ENTER>
MOV AX,0 <ENTER>
MOV AX,CX <ENTER>
OUT 70,AL <ENTER>
MOV AX,0 <ENTER>
OUT 71,AL <ENTER>
INC CX <ENTER>
CMP CX,100 <ENTER>
JB 103 <ENTER>
INT 20 <ENTER>
<ENTER> just hit enter on this line
G <ENTER>
Q <ENTER>

Basic BIOS password- works 9.9 times out of ten

If this fails you will need to

Select safe mode with networking to download
you could download all of these or just one save them to a usb drive for later use if one fails to remove the password

http://www.tech-faq.com/reset-bios-password.html

At some stage you might need to press Ctrl+Enter rather than just Enter if on a Dell Latitude E5410

http://majorgeeks.com/CmosPwd_d239.html
A CMOS BIOS password recovery tool
Editors note: This tool should only be used by experienced computer users.

Please see the enclosed read me if you would like to run it from Windows.
Failure to follow instructions (from Windows) will cause your anti-virus to flag this as a virus.

Posted on Mar 26, 2014

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  • Contributor
  • 8 Answers

Try software to reset your cmos password.

Posted on Mar 26, 2014

6 Suggested Answers

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Posted on Jan 02, 2017

  • 68 Answers

SOURCE: boot

Since you forgot the password best thing to do is make the cmos forget it. The way to do this is remove the cmos battery. Take it out for several hours then put it back in. This will reset the cmos and you should gain access.

Posted on Sep 20, 2007

  • 1 Answer

SOURCE: reset bios password of acer aspire 5720 notebook

i had same problem and i started to worry but then i tried doing it in capitals and for some reason it worked have u tried doing it in capitals?

Posted on Jan 17, 2009

Masseyfer
  • 5 Answers

SOURCE: Resetting admin password on setup.

In the model 280 Optiplex, remove the jumper, they have two pins only, turn on the computer, wait for 1 minute. The jumper is located close to the power plug, in the right side, you read PWD, theres is it, i did it and working fine...

Posted on Mar 03, 2009

  • 1 Answer

SOURCE: Cleaing CMOS Password

WhoDoctorK9's bios reset worked on 6715b notebook.
Thanks!

Posted on May 24, 2009

shibuda
  • 1812 Answers

SOURCE: how to reset cmos &

Hi,
Switch off your pc ,open the cpu cover,
Remove the CMOS battery , and hold on Powre switch for few seconds.
BIOS - The setup program used in desktop and laptop computers/PCs - Page 1 of 2
Set up Bios load fale save default .or can do help from the following bellow the link.
Phoenix BIOS setup and help
re install the cmos battery.
Hope this helps.
.

Posted on Jan 16, 2011

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1 Answer

I m having trouble with my SONY VAIO (VGN-FE770G). i forgot my bios password. kindly send me a solution.


The most common way that we know on how to reset or clear the BIOS password is to physically remove the power from the computer by disconnecting the power plug and then removing the Cmos battery for 30 minutes from the motherboard. Another way is to reset the clear CMOS jumper on the motherboard itself. Both of the 2 methods mentioned works because most motherboards use a battery to sustain the BIOS/CMOS settings for the motherboards PROM chip. So by cutting off cmos the battery power, the BIOS/CMOS settings will be erased. Hope this helps

Jul 03, 2011 | Computers & Internet

3 Answers

Hello, My name is Vahe and I have got the following problem, I have forgot my BIOS password and I can't to turn on. Laptop model Toshiba satellite A200-13M. So I have got some solution to delete...


The most common way that most of us know on how to reset or clear the BIOS password is to physically remove the power from the computer by disconnecting the power plug and then removing the cmos battery for 30 minutes from the motherboard. Another way is to reset the clear CMOS jumper on the motherboard itself. Both of the 2 methods mentioned works because most motherboards use a battery to sustain the BIOS/CMOS settings for the motherboards PROM chip. So by cutting off cmos the battery power, the BIOS/CMOS settings will be erased. Hope this helps

Jun 02, 2011 | Toshiba (K000002020) Motherboard

2 Answers

ACER default password for Bios


Hi,

By default Acer wont enter any BIOS password however, if you have forgot BIOS password then you have to reset CMOS jumper setting. Please follow the below steps: Open the Laptop back panel. Locate the CMOS battrey, remove it & then with the help of a screw driver keep on pressing the terminal inside it and turn ON the computer for 10 secs and Turn Off (make sure you keep on pressing the terminal with a screwdriver while turning ON). It will short the BIOS setting. Now, fix the CMOS battrey & restart the computer. This will take care of the issue.

Thanks and regards,
Jitha

Nov 24, 2010 | Acer Aspire 5920-6423 Notebook

1 Answer

I want to reset bios password.


what you need to do is to remove the CMOS BATTERY for some seconds/minutes and then replace it. This brings your machine to default settings and then you can enter a new bios password.start your computer then press F10 for setup/Delete for other machines and then go to bios settings and set a new bios password.In addition to this you can also clear the bios password by removing the shunt on the cmos jumper then plug it other way round, remove it again and then plug it as it was at first.

Feb 01, 2010 | Acer Extensa 4620-4648 Notebook

2 Answers

I forgot the security password


here are 2 password type first 1 is bios password if tell me about your bios password it prompt when u powerup follow procedure below

For that you need to reset factory defaults settings for bios.
For reset bios u have to open back side of your laptop then u find motherbord circuit there.
pull cmos cell on motherbord for 15 minute then it reset to defaults.
Also u can reset with jumper settigns read carefully on mother bord there is 1 jumper near cmos cell u read there " bios reset or clear"
It is on 1-2 position right now set it in 2-3 position then power up then all bios settings are reset.
then again set it in 1-2 its original position.
Then it not want password.

And if u tell about windows password
Then when you power up the computer press F8 key then enter in safe mode then wait until it prompt for user password

then enter in administrator then if u able to enter then reset your password.
But if u set and forgot default administrator password then u should need winxp recovery disk.

Aug 08, 2009 | Acer Aspire 5580 Notebook

1 Answer

Need help forgot password for HP Compaq NX7330


here are 2 password type first 1 is bios password if tell me about your bios password it prompt when u powerup follow procedure below

For that you need to reset factory defaults settings for bios.
For reset bios u have to open back side of your laptop then u find motherbord circuit there.
pull cmos cell on motherbord for 15 minute then it reset to defaults.
Also u can reset with jumper settigns read carefully on mother bord there is 1 jumper near cmos cell u read there " bios reset or clear"
It is on 1-2 position right now set it in 2-3 position then power up then all bios settings are reset.
then again set it in 1-2 its original position.
Then it not want password.

And if u tell about windows password
Then when you power up the computer press F8 key then enter in safe mode then wait until it prompt for user passsword

then enter in administrator then if u able to enter then reset your password.
But if u set and forgot default administrator password then u should need winxp recovery disk.
Please rate me .
Thanks .

Jul 29, 2009 | HP Compaq nc6320 Notebook

1 Answer

How do i remove bios password


There are many known ways to reset / remove / bypass the password:

* By removing the CMOS battery
* By using the motherboard jumper
* By using MS DOS command
* By using software
* By using Backdoor BIOS password
Almost all motherboards use a small coin sized CMOS battery to store all BIOS settings along with the password. To reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15-30 minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings.

If it fails, then try to remove the battery for at least one hour.

Mar 13, 2009 | HP Compaq Presario 2500LA Notebook

1 Answer

Forgot bios password


Hi ,
You need to reset your CMOS.Open your CPU cover.and look for CMOS battery.Its a button cell.You have to remove that battery and on the machine and go into bios.It will remove your cmos password.
But if this thing not worke then find out CMOS reset jumper on your motherboard.It will be located somewhere near your CMOS battery.Just remove that jumper and connect to reset settings.and start your machine.It will remove your password.

Mar 09, 2009 | Dell Microsoft Windows XP Home Edition

1 Answer

Forgot my password


BIOS passwords can be reset in two ways,
1. using software 2. using hardware.

I would first try resetting using software, here are two software's to reset or retieive BIOS passwords.

!BIOS - is a PC BIOS toolkit offering password removal/decrypt and BIOS settings modification/backup/restore.

CmosPwd - Cmos password recovery tools 4.8

Please let us know if it works.

Feb 22, 2009 | HP Pavilion ze2000 Notebook

2 Answers

Sony vaio VGN FJ290P password reset sony vaio VGN FJ290P


I have set the password for administrator when i entered the bios set up. you can change its setting but not the configuration unless you've entered the password. you can't change the password with a new one if you cant enter the old password. Next time dont forget your password because laptops has its security even when stolen you cant open its bios set up if its protected by password. CMOS battery is in the mother board. You need a service technician to open your laptop to reset the bios setup battery.

Oct 11, 2008 | Computers & Internet

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