3. Create a Bootable Flash Drive (Optional but Recommended)
Copy the CMOS De-Animator file into a bootable flash drive if you want to run it directly from startup. You can create a bootable USB using a tool like Rufus with the FreeDOS system.
4. Run the Program and Reset the CMOS
When the tool is running, click the “De-Animate (Clear CMOS)” button. The program will schedule CMOS removal at the time of the next system reboot. You’ll see a notification that your changes have been saved.
5. Restart and Enter the BIOS
After a reboot, the BIOS will lose all the old configurations, including the password. Try entering the BIOS with the F1, F2, or DEL keys, depending on the model. You should now be able to access the BIOS without being asked for a password.
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2. Reset via CMOS Battery (for older models)
The BIOS over CMOS battery reset method is a long-standing manual approach to remove all BIOS configurations, including passwords. This method is effective for older Lenovo models that are not equipped with advanced security features such as the Absolute Persistence Module (APM). However, this method requires basic skills for opening the laptop case.
Steps to Reset Lenovo BIOS via CMOS Battery:
1. Turn Off the Laptop and Unplug All Resources
Make sure the laptop is completely off. Remove the adapter, the main battery (if removable), and all connected external devices.
2. Open the Back Case of the Laptop
Use a small screwdriver to unscrew the bottom casing cover. Do so carefully so as not to damage the internal clip or socket.
3. Find a CMOS Battery
Look for a coin-shaped battery (such as a watch battery) on the motherboard. It is usually silver in color with a small socket or connector.
4. Remove the battery for ±10 minutes
Unplug the CMOS battery from its connector and let it sit for 10–15 minutes. This will remove the entire BIOS configuration, including the password.
5. Reinstall and Turn on the Laptop
After enough time, plug in the CMOS battery, close the case, and turn on the laptop. The BIOS will revert to the default settings without a password.
This method is not effective for modern Lenovo series that use an Absolute Persistence Module (APM), such as the ThinkPad X1 Extreme, P1 Series, or models with an encrypted BIOS. On this device, the BIOS configuration is stored on a special chip that will not be reset by simply removing the CMOS battery.
3. Contact Lenovo Support (Last Resort)
If all self-reliance methods don’t work or your device is the latest model with a high-level security system, then the safest and legal step is to contact official Lenovo support. This method not only ensures data security but also ensures that the reset process is carried out according to the manufacturer’s standards.
Steps to Contact Lenovo Support to Reset BIOS Password:
1. Prepare Proof of Official Ownership.
Lenovo is very strict in verifying BIOS reset requests. You should prepare:
- Original purchase invoice, or
- Proof of payment is valid with identity information and device serial number.
2. Contact Lenovo Support through official channels.
- Access the official support page: https://support.lenovo.com
- Choose a live chat, email, or hotline number option according to your region.
- Tell them that you want to reset the BIOS password and have prepared proof of ownership.
3. Verification Process by Lenovo.
Once the documents are verified, Lenovo can:
- Provide a unique master password (specific to some models), or
- Directs you to an authorized service center for immediate handling.
4. Reset Performed by a Certified Technician.
In most cases, an authorized Lenovo technician will perform the reset process using a special device to maintain the integrity of your device’s security system.