Reboot.
A: Yes – Windows 10 includes a generic “HID-compliant touch screen” driver. Uninstall your current touch driver, restart, and let Windows automatically install its own. sony vaio touch screen driver -windows 10-
Some Vaio owners report that the touch screen works after boot but dies after sleep or hibernation. This is a power management issue. Reboot
If touch is critical for your workflow and none of the above works, consider dual-booting or rolling back to Windows 8.1 using Sony’s . The original touch drivers are fully functional there. Some Vaio owners report that the touch screen
When Windows 10 performs a major update (such as the transition from version 1909 to 2004, or a recent security patch), it often overwrites custom manufacturer drivers with generic Microsoft drivers. While this works for most hardware, VAIO touch screens often reject these generic drivers, resulting in the device disappearing from the Device Manager entirely or showing up as an "Unknown Device."
: Use the "Advanced Tools" in VAIO Care to reinstall bundled original drivers if the touch function was working before an update. Common Fixes for Unresponsive Touchscreens
You cannot fix what you do not identify. Correct driver installation requires your exact model number.