Touchscreen Not Responding

Why this might happen

• Touchscreen disabled in Windows settings or Device Manager.
• Outdated or corrupted drivers for the HID-compliant touchscreen.
• Windows updates or firmware conflicts affecting digitizer functionality.
• Touch service stopped — Human Interface Device service not running.
• Screen damage or dirt — cracked glass, liquid residue, or heavy smudges interfering with touch input.
• Hardware fault — digitizer cable loose or touchscreen panel defective.

Troubleshooting steps

1. Basic checks

• Clean the screen gently with a microfiber cloth.
• Ensure no protective cover or thick screen protector is interfering.
• Restart the laptop to refresh services.

2. Windows settings

• Go to Settings > Bluetooth & devices > Touch.
• If there’s a toggle for Touchscreen, ensure its enabled.
• Test in multiple apps (e.g., Edge, Camera) to confirm its system-wide.

3. Device Manager check

• Press Win+X > Device Manager.
• Expand Human Interface Devices (HID).
• Locate HID-compliant touchscreen.
• If present: right-click → Enable device (if disabled).
• If missing select Action > Scan for hardware changes.

4. Update/reinstall drivers

• In Device Manager, right-click HID-compliant touchscreen → Update driver → Search automatically.
• If issues persist: right-click → Uninstall device (check Delete the driver software if shown).
• Reboot — Windows should reinstall it.
• Alternatively, run VAIO Update for official drivers.

5. Run Hardware Troubleshooter

• Open Windows Terminal (Admin) → type:
  msdt.exe -id DeviceDiagnostic
• Follow the wizard to auto-detect hardware problems.

6. Calibrate touchscreen

• In Windows search, type Calibrate the screen for pen or touch input.
• Choose Setup and follow on-screen prompts.
• Select Calibrate if touches don’t align properly.

7. Windows & firmware updates

• Run Windows Update and VAIO Update.
• Install all pending system, firmware, and chipset updates.
• Restart and test again.

8. BIOS/UEFI check

• Restart → press F2 to enter BIOS.
• If available, ensure Touchscreen/Touch panel is enabled.
• Save & Exit.

9. Hardware inspection

• If the touchscreen remains undetected, the digitizer cable may be loose or the panel itself defective.

10. Safety check

• If there is visible cracking, swelling, or liquid damage around the screen, stop using the device until inspected by service.

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Still not fixed.

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