If you are locked out of your BIOS, there are only a few legitimate paths to resolve the issue, depending on the age and model of your device.
Attaching an external hardware programmer (like a CH341A programmer) using a SOP8 clip to read the chip's data. Lenovo Bios Unlock Tool
For newer models (8th Gen Intel and newer), the process usually requires: If you are locked out of your BIOS,
Before turning to high-risk third-party tools, exhaust the legitimate paths to recover your machine. Contact Lenovo Support or an Authorized Service Center Contact Lenovo Support or an Authorized Service Center
Some users unlock the BIOS to upgrade processors or remove the "whitelist" restriction that prevents Lenovo laptops from accepting non-approved Wi-Fi cards or other components. This is particularly common among users wanting to install newer CPUs or better wireless adapters than the manufacturer officially supports.