Lastly, the Touchpad issue may be fixed by updating BIOS.Improve the performance of your PC completely.Lastly, Selecting boot drives and Setting password prompts for providing secured access to the BIOS user interface.For Enabling and disabling some system components and Hardware configuration.One can perform many functions with BIOS UI such as: It is made accessible to a nonvolatile read-only memory chip and whenever your computer is turned on the processor passes control to the BIOS.Computers are now coming with UEFI firmware installed instead of BIOS but there is a similar role of UEFI too.Furthermore, it is a software that controls display, keyboard, drives and more.BIOS or (basic input/output system) is the first program that loads whenever your computer is turned on.Method 2: Fix Lenovo Yoga 520 Touchpad not working by Updating BIOS What is BIOS? exe file and follow the on-screen instructions to install the driver for your Laptop. After the download completes you have to double click the.Click on Category Mouse and Keyboard & Input Devices Under this category you can download the Latest Driver for your laptop.Search for Download Touchpad Driver for Laptop Model, click the link available on the top of search results or Go to and search for your Laptop model.Methods to Fix Lenovo Yoga 520 Touchpad not working problem Method 1: By Updating Driver