Mentioned in this comment, worked for X540L and X556UR. Enter to the BIOS setup, go to the Advanced tab and enable Internal Pointing Device.Be careful with this option, here it is explained how to do it. Update the BIOS to the latest version. Mentioned in this comment, worked for ZenBook UX305FA, UX305F, UX305, E200HA, X454LA, X455LA and X540AL.Enter to the BIOS setup ( help) and select “ Load Optimized Preferences“, then save and exit. Mentioned in this comment, worked for ZenBook UX305FA, UX305F, UX305UA, UX303LN, UX303U, UX360CA, UX391FA, A455LN/X455LN, X455YA, X555B, X555BP, X555LAB, X555Q, X555QA, X555QG, F556UA, N56JR, N56VZ, Q536FD, Q405UA, S410UA and ASUSPRO B9940.Execute the installer with the Run as administrator option.