Hello, E.Z.S
Welcome to Microsoft Community.
It could be a hardware issue. The touchpad's physical components might be faulty, especially if you've tried all the software fixes and the problem persists. Here are a few steps to check:
Try an external mouse: Connect an external mouse and see if it works fine. If it does, the issue is likely with the touchpad hardware.
Check BIOS settings: Enter the BIOS settings and see if the touchpad works there. If it doesn't, it's probably a hardware problem.
Update drivers: Go to the Lenovo support page, enter your device model, and download the latest touchpad drivers. Install them and restart your laptop: Lenovo Support | Drivers, Troubleshooting, Warranty, Repair | Lenovo Support US
Also, Lenovo has a hardware diagnostic tool that can help you check and diagnose various hardware components. You can download it from Lenovo's official website: Lenovo Diagnostics for Windows - Desktops, Notebooks, Workstations - Lenovo Support US. This tool can help you determine if there's a hardware issue with the touchpad. If it finds a problem, you can contact Lenovo support for further assistance.
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Yuhao L
Microsoft Community Technical Support