How to remove BIOS passwords from a Lenovo ThinkPad

Looking for a way to retrieve, delete, or reset your Lenovo laptop’s BIOS password? There is nothing to worry about. In this post, I’ll show you a variety of ways to reset your laptop’s bios password, regardless of the manufacturer. When using my Lenovo laptop to reset the BIOS Password, I’m going to write down the ways for taking references.

The techniques for resetting the BIOS password have their own advantages and disadvantages. As an example, unplugging your motherboard’s CMOS battery for five minutes Lenovo laptops and other desktop/laptop computers may benefit greatly from this method for resetting the BIOS password. If you’re using a laptop, there’s the potential risk of voiding your warranty if you attempt this procedure without first opening up your laptop’s case. Software comes in useful in this situation.

In addition, the BIOS password is often saved in an EEPROM on the motherboard of a laptop, rather than on the CMOS. You can’t launch your Lenovo laptop if the CMOS battery has been removed and the password is saved in the EEPROM. For this reason, an EEPROM programmer or EEPROM reader may be required to extract the password. If you’re looking for an EEPROM programmer, you may simply find one at an electrical store or lab.

A hot air desolder or a pair of wires may be used to remove the EEPROM’s solder mask and insert it into an EEPROM reader to reprogram it. Then, on the other computer, use cmospwd / d / l eeprom backup to re-program your EEPROM. The EEPROM may be filled with “0” zero, or FF, if there is no password. After that, you may do a five-minute CMOS reset by removing the CMOS battery.

Getting help from the manufacturer or support staff is the best approach to address any issues with your computer’s hardware. They might propose unlocking BIOS settings. To my disappointment, I can find no information on how to do a bios password reset on the Lenovo official website.

You may use this guide to help you reset your BIOS password quickly and effectively. Lenovo ThinkPad, IdeaPad, Yoga, and other Lenovo laptop models are all compatible with these instructions.

Remove BIOS Password For Lenovo Laptop

Once you’ve established a BIOS password on your Lenovo laptop, you’ll have to input it every time the command prompt appears during startup.

Because the BIOS password is encrypted, if you forget it you won’t be able to access the BIOS settings. To summarise, unless your laptop has a really sensitive file that requires additional protection, do not add it to your PC. Here are the steps to removing the BIOS password from your Lenovo laptop if you’ve done so.

  • To begin, shut down your computer and leave it unplugged for a few minutes.
  • When your Lenovo laptop boots, press and hold the F1 key until your BIOS appears on the screen before releasing the key.
  • Now, in your existing BIOS, enter the proper password in the password field. Then, pick the “Supervisor” symbol by clicking the Password button and entering your password.
  • Enter your existing BIOS password and hit the space bar in this area. You may then enter your password by pressing Enter.
  • On the verification screen, hit the enter key once again.
  • It’s likely that your BIOS password has already been reset.
    Finally, click “Yes” in the setup notification box and hit the F10 key to save the modification.

There you go, you have successfully removed BIOS Password on Lenovo Laptop. Now let’s learn how to reset bios password if you have forgotten one.

Reset BIOS Password on Lenovo Laptop

Method 1: Steps to Reset Lenovo BIOS Password Using the Backdoor Password

Using a backdoor password, I’ll show you how to reset your Lenovo BIOS password. The manufacturer has included a BIOS backdoor password. We aren’t generally able to view this procedure since it is concealed. So, here are the methods to use the Backdoor password to reset the Lenovo BIOS password on your computer.

  • To begin, turn on the laptop and hit the F1 key to bring up the BIOS setup screen.
  • After that, you must make three unsuccessful attempts to input the incorrect password. Who knows whether it’s just that you’re missing a few characters?
  • Your BIOS login will now be denied if all the passwords are wrong after three tries, with a message on your screen reading “System Disabled.” Afterwards, you’ll find a code that will allow you to reset your Lenovo laptop’s BIOS password via the backdoor method.
  • The next step is to connect to the internet on a computer you have access to. Go to in your web browser now.
  • After that, you’ll see a box that says, “Enter your code.” In the textbox, enter the code you received on your BIOSdisabled machine. To get your password, click on the Get password button.
  • You will then see a list of passwords on the website. Now return to your laptop and do a bios password reset.
  • Press F1 on the laptop’s restart to bring up the BIOS entry screen once again. Try each password from the list one at a time and see if you can log in.

Now, if you can’t find the backdoor password from the list to reset Lenovo bios password, try the other methods that I have listed.

Method 2: Steps to Reset BIOS Password on Lenovo Laptop Removing the CMOS Battery

You’ll have to remove the DMOS battery from your laptop to clear the data in your BIOS if the aforementioned technique of resetting the password on a Lenovo laptop doesn’t work.

Caution: The manufacturer’s warranty may be voided if you open up your laptop. Do it at your own peril! In order to disassemble your laptop, you may find several tutorials on YouTube showing how to disassemble various Lenovo computers.

To reset your Lenovo laptop’s bios password, follow the instructions below. I’ll use the Lenovo ThinkPad as an illustration of how this strategy works.

If your Lenovo laptop has a detachable battery system, turn it off and unhook all the wires before removing the battery.

Now, remove the screws from the bottom of your laptop’s shell to access the battery.

If you have a Lenovo laptop with a battery beneath the keyboard, you’ll need to remove the motherboard from the laptop shell in order to access the battery. In order to avoid this, the CMOS battery must be placed on top of the laptop.

After that, carefully remove the CMOS battery from the motherboard of your laptop. In order to remove the BIOS password, you must do this procedure.

Before connecting the CMOS battery back into the motherboard, wait 5 to 10 minutes.

Reassemble your laptop and power it on once again.

To access the BIOS settings without inputting a password, hit the F1 key repeatedly.

Method 3: Steps to Reset BIOS Password on Lenovo Laptop By Short-Circuiting SDA and SCL in Security Chip

To make an SDA/SCL short circuit, Disconnect your laptop from any power sources and begin disassembling it when it has finished powering down.

  • There are a variety of screws that keep your laptop case together.) Because of this, you will need to take note of the screws and holes. You may snap a picture of it to do so.)
  • Find the chip after you’ve disassembled your Lenovo laptop. The motherboard’s back has it. So, if necessary, remove the motherboard from its housing and flip it over. There is no doubt about that.
  • I/O devices, such as a monitor and keyboard, must be plugged into the motherboard to short circuit the SDA/SCL chip after finding it. As a result, connect the I/O device and power cord before turning on the laptop.
  • Short-circuit the SCL and SDA as soon as your keyboard’s backlight or any light is activated.
  • With any luck, you will be able to immediately enter BIOS without having to ask for a password.
  • If this doesn’t work, you’ll have to attempt it again and again.
  • When you are in the BIOS settings of your laptop, you may reset the password. The BIOS may be configured to deactivate the Supervisor Password when it is no longer required.
  • It’s time to leave the application by pressing the F10 key.
  • After your BIOS password has been properly unlocked, turn your laptop off and reassemble it.

CMOS De-Animator 3

CMOS De-Animator is a service utility for your system’s CMOS RAM. Unlike its predecessor, the CMOS De-Animator 2.0 includes a graphical user interface making it easy for you to operate; and CMOS-backup options together with the “Clear CMOS” procedure, which was only on the purpose of the original version. So, you can now backup the CMOS settings into a file or restore them afterward. The program supports all of 32-bit and 64-bit Windows operating systems except Windows 95 and Windows NT 3.51; for these previous programs, you have to utilize De-Animator’s previous version.

Video Guide


To help your computer access its storage devices, the BIOS provides fundamental operating instructions. It’s impossible to access your computer unless you know the password to your BIOS.

This password may be used for two separate purposes: to prevent the BIOS from being tampered with, or to prevent the machine from starting at all.

If you’ve forgotten your Lenovo laptop’s BIOS password, I’ve attempted to make it easy for you to reset it.

Bryan V. Root
Bryan V. Root
Articles: 460

Leave a Reply

Your email address will not be published. Required fields are marked *