A customer has brought in a laptop with a touch screen that is no longer responding to touch input. You've verified that the touch screen functionality is enabled in the system settings, and the device has the latest drivers. What is the NEXT best step to take in troubleshooting the touch screen issue?
Reinstall the touch screen drivers.
Replace the touch screen with a new one from an approved vendor.
Adjust the screen resolution to ensure it matches the touch input.
Calibrate the touch screen.