Hi,
Please try the troubleshooting steps in below two articles to see if the issue could be resolved.
Fix touchpad problems in Windows 10
https://support.microsoft.com/en-us/windows/fix-touchpad-problems-in-windows-10-30b498e5-0caa-9740-2b21-336ea75ee756
Laptop Touchpad Not Working? Here Are 9 Fixes
https://www.maketecheasier.com/laptop-touchpad-not-working-fixes/
If all don't work, please run below commands in CMD as administrator.
• DISM.exe /Online /Cleanup-image /Scanhealth
• DISM.exe /Online /Cleanup-image /Restorehealth
• DISM.exe /online /cleanup-image /startcomponentcleanup
• sfc /scannow
Each of these actions can take a few minutes, so it is important to execute one at a time. When finished, you must restart the PC.
Use the System File Checker tool to repair missing or corrupted system files
https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system
Thanks,
Eleven
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