More info is needed to accurately answer this question, like did you upgrade the OS to 10 or remove any software but to start, I would uninstall and delete if option applies, any and all HID Touch & Sensory drivers from the system and reboot. Also, check the Sony site for driver checks and support solutions. If all else fails, do a system reset, with Windows 8 recovery media or on Windows 10 using the Recovery, Reset Settings, removing all data "as if to recycle the device".