If this does not work, check if your Lenovo laptop has a dedicated key to activate or deactivate the touchpad. If yes, you might have pressed that key accidentally that disabled your touchpad.

If you use a third-party Windows 10 laptop or computer such as one made by Acer, HP, Lenovo, or Dell, you may need to ...

If that doesn’t work, try these solutions ... that suggests if affects the touchpad. One obtuse Lenovo touchpad icon Unfortunately, not all touchpad icons are easy to figure out.