You may connect your computer to a different walljack and see if it makes any difference. Another step you may try is to uninstall and re-install the touchpad driver from 'Device Manager' by following the steps below:
Click on “Start” and right click on “Computer”.
Click on “Manage”.
Click on “Device Manager”.
Under “Mouse and other pointing devices”, you will find the touchpad driver listed.
If the issue persists, you may update system BIOS.
Note: Make sure the ac adapter is connected and the battery is charged 10% or above to update the BIOS. Also, disconnect all the external peripherals before updating the BIOS. All the programs should be closed and documents saved.