Why am I unable to access the Smart TV menu or settings?

1. Check that you have an active internet connection.
2. Ensure that the TV's power plug is securely connected to the electrical outlet.
3. Verify that the correct HDMI (or other video) cable is used and that it is securely inserted in both the TV and the connected device.
4. Reboot the TV and connected device if any.
5. Update the firmware on the TV if available.