Hi,
Thank you for posting the question in Microsoft Community.
I am sorry for the inconvenience.
Let us refer the following methods:
Method 1:
I would suggest you to run “Hardware and Devices” troubleshooter to diagnose the exact issue.
Follow these steps to run the troubleshooter:
a. Press “Windows key + W”.
b. Type “Troubleshooting” without quotes in the Search box and hit enter.
c. Select “Hardware and Sound” from the Troubleshooter Window.
d. Select “Hardware and Devices” under Devices option.
e. Follow the On Screen instructions.
Method 2: Un-install and re-install touch pad drivers from the manufacturer’s website and see if that helps:
Step 1: un-install the drivers:
Follow these steps:
a. Press “Windows Key + W” from the keyboard.
b. Type “device Manager” without quotes in the search box and hit enter.
c. Right click on the touchpad drivers and select “Uninstall”.
d. Restart the computer once it is uninstalled.
Step 2: Download the latest touchpad drivers for “Windows 8” from manufacturer’s website.
Hope the information helps. Please reply to assist you further.