Power off laptop, disconnect with the power source, disassemble laptop. Short circuit SDA and SCL in security chipġ.

Turn on the laptop, press F1 key repeatedly, you will get into Lenovo/ThinkPad BIOS settings without entering password. Wait for an hour, place the CMOS battery back in its slot again, and reassemble laptop.ĥ. This will reset BIOS settings to default settings, thereby clear BIOS password.Ĥ. Find the CMOS battery, and remove the CMOS battery from laptop gently. Remove the battery from laptop, and then remove the bottom of the laptop's case.ģ. Power off your Lenovo laptop, disconnect with the power source, unplug all of the cables from laptop.Ģ. If you can't find your backdoor password, try with the methods below.

But you only be able to enter three incorrect passwords before your system is locked. Go to your laptop, restart it and press F1 key to boot to the BIOS entry screen again, and then try with the list of passwords one by one. Enter the code you get on the System Disable screen and click on Get password.ĥ. Go to another computer with internet connected, open this site.

And you will get a code to get the backdoor password. On the password text box try with three passwords, if all these three passwords are incorrect, you will be blocked with the screen 'System Disabled'. Power on laptop, press F1 key to boot up BIOS entry screen.Ģ. It is hidden, so we can't see it normally, but we can try to find it out on the master password site.ġ. There is a backdoor password built-in to the BIOS by the manufacture. 3 ways to unlock bios password on lenovo laptop: Use the backdoor password Remove CMOS battery Short circuit SDA and SCL in security chip Use the backdoor password Can try on Lenovo ThinkPad, IdeaPad, Yoga, and other series of Lenovo laptops. If the Lenovo Service Support can't help you to unlock your BIOS password, you can try with the methods below. But as I see in the official site of Lenovo laptop, they can't help to reset your BIOS password if you forgot the old password, they will recommend you to have the system board replaced. When you get problem with your laptop, you had better contact with the manufacture support and ask for their recommended methods to unlock your BIOS setup settings. However, if you forgot BIOS password in Lenovo laptop, how to enter BIOS setup settings? How to reset or clear the forgotten password? If you set a supervisor password on your BIOS setup, you will be prompted to enter this password before accessing BIOS setup settings. 3 Ways to Unlock BIOS (UEFI) Password on Lenovo ThinkPad Laptop

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