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Lenovo n585 bios password - Lenovo 3000 C200 Notebook

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Posted on Jan 02, 2017

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bronk50
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SOURCE: bios password for Lenovo T400

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:

Q

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.


Hope this helps.

Posted on Nov 28, 2012

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Please help me : :' my pc is lenovo g500 and i forgot password bios who help me please


Hi,

I do google your problem and look to the lenovo G500 manual.
here's the manual says.

sources: http://www.lenovo.com/shop/americas/content/user_guides/g410_g510_ug_en.pdf

BIOS password problems I forgot my password. • If you forget your user password, you must ask the system administrator to reset your user password. • If you forget your HDD password, a Lenovo authorized servicer cannot reset your password or recover data from the hard disk. You must take your computer to a Lenovo authorized servicer or a marketing representative to have the hard disk drive replaced. Proof of purchase is required, and a fee will be charged for parts and service. • If you forget your administrator password, a Lenovo authorized servicer cannot reset your password. You must take your computer to a Lenovo authorized servicer or a marketing representative to have the system board replaced. Proof of purchase is required, and a fee will be charged for parts and service.


But in my own way of troubleshooting.
1. open your Lenovo G500
2. Check your motherboard and look for bios/cmos battery.
3. Remove the battery
4. Get flat screw driver then put it between two pins where the cmos battery attached.
5. Hold it for 10 to 15 sec.
6. Put the cmos battery back and the motherboard
7. Power it up and holla the bios setting has been reset to default.

Here the sample image of Lenovo G500 motherboard

25740972-trby4v3i5qhmaaiw2sly1hfm-4-0.jpg
http://www.lenovo.com/shop/americas/content/user_guides/g410_g510_ug_en.pdf

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  • Turn the Lenovo computer off. Leave the computer off for at least five seconds.
  • 2 Press and hold down the "F1" key. Turn the computer on.
  • 3 Release the "F1" key when the BIOS screen appears.
  • 4 Type the current BIOS password into the password field.
  • 5 Click the "Password" button. Select the "Supervisor" icon.
  • 6 Type the current BIOS password into its field. Press the spacebar.
  • 7 Press "Enter" on the blank password box. Press "Enter" on the verification screen. The BIOS password is removed.
  • 8 Click the "Save and Exit" icon.


  • Read more : http://www.ehow.com/how_8577037_remove-bios-password-lenovo.html

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    But it will be solve for few models.
    http://repair4laptop.org/laptop_and_notebook_bios_password_reset.html
    Try from here you have same bios company ,just try it.
    http://www.technibble.com/how-to-bypass-or-remove-a-bios-password/

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