Lenovo Thinkcentre M720q - Bios Password Reset
This is the most elegant method for the M720q. It does not require soldering or removing the BIOS chip. The M720q (like many Lenovo ThinkCentre models) has a vulnerability in the System Management Interrupt (SMI) handler.
What you need:
How it works: You inject a malicious SMI command via the SPI interface (while the PC is sleeping) to dump the BIOS password hash or wipe the security chip.
Simplified Steps:
Verdict: This works reliably on the M720q, but requires technical skill. If you are not comfortable with command line and GPIO, skip to the hardware method below.
If your M720q is a business-critical machine (microserver, POS system, medical device) and you cannot risk bricking it, call a professional.
If the short method fails (or you accidentally short the wrong pins and brick the board), you have one final option.
Buy a pre-programmed BIOS chip.
When you install the new chip, the system will have a completely clean BIOS with no password. You will need to input the machine's serial number (on the sticker on the case) using a tool like AMIDEWINx64.exe to restore full functionality.
Before we dive into solutions, it’s critical to understand why resetting the BIOS on an M720q is harder than on a desktop from 2005.
Bottom line: Pulling the button cell battery off the motherboard for a few seconds will not clear the password on this model.
Older desktops stored BIOS passwords in CMOS and could be cleared by removing the CMOS battery or using a jumper. Modern Lenovo ThinkCentre models often store passwords in firmware NVRAM or on the motherboard’s embedded controller; removing power or the CMOS battery typically will not clear a supervisor or power-on password. lenovo thinkcentre m720q bios password reset
However, a safe checklist if you want to try:
Caveat: On M720q this often won’t help because passwords are stored in non-volatile firmware.
The M720q supports a "Maintenance Mode." The feature exploits this by creating the specific SVPW file structure recognized by the BIOS bootstrap loader.
Disclaimer: This is a conceptual feature design. In reality, currently, only Lenovo Technical Support can generate the specific cryptographic files required to reset the BIOS password on the M720q, and they usually require proof of purchase.
How to Reset the BIOS Password on a Lenovo ThinkCentre M720q Go to product viewer dialog for this item.
Locked out of your BIOS settings? Whether you've forgotten a supervisor password or bought a used unit with a pre-set lock, resetting the BIOS on a Lenovo ThinkCentre M720q
requires a hardware-level intervention. Standard software "factory resets" will not clear a BIOS-level supervisor password. Core Method: The Maintenance Jumper Reset
The most effective way to clear a forgotten BIOS password on the
is by using the Clear CMOS (Maintenance) Jumper located on the system board. Step-by-Step Instructions:
Prepare the System: Turn off the computer, disconnect the power cord, and remove any external cables. Open the Chassis: Slide off the computer cover to access the motherboard.
Locate the Jumper: Find the JP35 jumper block on the system board. On many This is the most elegant method for the M720q
models, this is near the top-left corner or close to the Wi-Fi antenna.
Move the Jumper: The jumper is typically on pins 6-5 (standard position). Move it to pins 2-4 (maintenance position).
Tip: Some users report that removing the RAM from the backside is also critical during this specific boot process for the password to clear fully.
Power On: Reconnect the power cord and turn the computer on. You will hear a series of 4-5 beeps (or double beeps), indicating the CMOS is clearing.
Reset to Default: Turn off the computer and disconnect the power. Move the jumper back to its original position (pins 6-5).
Verify: Reassemble the cover and power on. Tap F1 or Fn+F1 during startup to enter the BIOS. The password prompt should no longer appear. Alternatives and Notes Set, change, and remove a password - Lenovo
To reset the BIOS password on a Lenovo ThinkCentre M720q Go to product viewer dialog for this item.
, you must use the motherboard's physical Clear CMOS / Recovery jumper. Simply removing the CMOS battery will not clear the supervisor or power-on password on this model. 🛠️ Hardware Setup Power down the computer and disconnect all external cables. Remove the cover of the computer. Locate the Clear CMOS jumper on the motherboard. Position the unit so the rear ports are at the top.
Look for the jumper in the upper-left corner of the board. It is typically a small plastic block covering two of three pins. 🔄 The Reset Process
Follow these sequential steps precisely to erase the forgotten password:
Move the jumper from its standard position (covering pins 1 and 2) to the maintenance position (covering pins 2 and 3). How it works: You inject a malicious SMI
Connect the power cord back into the computer and turn it on. Leave it running for approximately 10 to 15 seconds. You may hear a series of short beeps; this is normal. Shut down the PC by holding the power button for 5 seconds. Disconnect the power cord from the machine once again.
Return the jumper back to its original standard position (covering pins 1 and 2). Put the cover back on and reattach your cables. 🖥️ Finalizing Settings Turn on the computer and the monitor.
Press F1 when the Lenovo logo appears to enter the BIOS menu. Save and exit to secure your cleared settings.
Lenovo ThinkCentre M720q BIOS Password Reset: A Comprehensive Guide
Are you struggling to reset the BIOS password on your Lenovo ThinkCentre M720q? You're not alone. Forgetting the BIOS password can be a frustrating experience, especially if you need to access the BIOS settings to configure your computer's hardware or troubleshoot issues. In this article, we'll provide a step-by-step guide on how to reset the BIOS password on your Lenovo ThinkCentre M720q.
What is the BIOS password and why is it important?
The BIOS (Basic Input/Output System) password, also known as the UEFI firmware password, is a security feature that protects your computer's BIOS settings from unauthorized access. It's a password that you set in the BIOS settings to prevent others from modifying your computer's hardware configuration or boot settings.
The BIOS password is essential for several reasons:
Why do I need to reset the BIOS password on my Lenovo ThinkCentre M720q?
There are several reasons why you may need to reset the BIOS password on your Lenovo ThinkCentre M720q:
Methods to reset the BIOS password on Lenovo ThinkCentre M720q
There are several methods to reset the BIOS password on your Lenovo ThinkCentre M720q: