my touchpad on my laptop stopped working.

Try these steps in order:

1. Update the touchpad driver through Windows Update
   • In Windows 11: Right-click Start > Settings > Windows Update > Advanced options.
   • Turn Receive updates for other Microsoft products On.
   • Under Additional options, select Optional updates.
   • Install all optional updates, then go back to Windows Update and select Check for updates.
   • Install all available updates and restart the laptop.
2. Check Device Manager for the touchpad
   • Right-click Start > Device Manager.
   • Look for the touchpad under:
     • Human Interface Devices
     • Mice and other pointing devices
   • If it appears there, update it using Device Manager.
3. Reinstall the touchpad driver if updating does not help
   • In Device Manager, find the touchpad under Human Interface Devices or Mice and other pointing devices.
   • Reinstall the device driver. This forces the latest driver to download from Windows Update.
   • Restart the laptop after reinstalling.
4. If the touchpad is missing completely in Device Manager
   • On some Lenovo systems, the correct driver may need to come from Lenovo support.
   • If Windows cannot detect the touchpad at all, contact Lenovo support for the specific driver for the laptop model.
5. Use a temporary workaround if needed
   • If the laptop has a touchscreen, the virtual touchpad can be enabled:
   • Right-click the taskbar > Taskbar settings.
   • Under System tray icons, turn Virtual Touchpad On.
   • Select the virtual touchpad icon in the system tray to use it.

If the touchscreen also starts having problems, install all Windows updates and optional updates, then restart.

References:

• Fix touchpad problems in Windows
• What to try if a touchscreen doesn't work in Windows
• Enable and disable the virtual touchpad in Windows
• Touchpad does not work, 'synaptics device not found' - Microsoft Q&A