Keypad Malfunction – Vaio

Why this might happen

Num Lock / Function Lock toggled, wrong keyboard layout/language, or accessibility features (Filter/Sticky Keys) altering input.
Temporary driver/firmware glitch; VAIO hotkey service not running.
Debris/spill causing stuck keys, or wear on the key matrix.
Loose keyboard ribbon cable after a bump/repair; top-case hardware fault.
USB devices/docks or external keyboards conflicting with input.

Quick toggles & basics
- Press Num Lock (for number-pad behavior) and test again.
- Toggle the Fn/Function Lock (often Fn + Esc on many laptops).
- Try Win + Space to switch keyboard language/layout back to your primary language.
Accessibility settings
- Windows Settings → Accessibility → Keyboard: turn off Filter Keys, Sticky Keys, and Toggle Keys.
External keyboard test
- Plug in a USB keyboard.
- If external works but built-in still fails, it points to internal keyboard hardware/cable.
Clean & inspect
- Power off. Gently blow compressed air across the keys.
- Check for stuck keys/debris; lightly tap around the affected area.
EC (embedded controller) reset
- Shut down → unplug AC and peripherals.
- If your model has a pin-reset hole on the bottom, press it with a paperclip for 5–10 seconds.
- Reconnect AC and test.
Driver refresh
- Device Manager → Keyboards: right-click Standard PS/2 Keyboard (and any VAIO keyboard entries) → Uninstall device.
- From the menu choose Scan for hardware changes (or reboot) to reinstall drivers.
Update VAIO utilities & firmware
- Use VAIO Update/My VAIO to install the latest hotkey/keyboard utility, chipset, and BIOS/EC updates. Reboot and test.
Isolation checks
- Try Safe Mode (Windows Recovery → Startup Settings → Safe Mode).
- Try entering BIOS (F2) at boot.
- If keys don’t work in BIOS (and external keyboard does), it’s likely hardware.

Note: If your issue is the touchpad/trackpad (pointer not moving, clicks fail). Please refer following link -

Submit a warranty request here: Submit a warranty request