When you turn key lights come on but nothing happens?

If the key lights come on but nothing happens when you turn the key, it could indicate a few potential issues. The battery might be dead or weak, preventing enough power from reaching the starter. There could also be a problem with the starter itself or a blown fuse in the ignition system. Additionally, ensure that the vehicle is in the correct gear (for automatic transmissions) and that there are no issues with the ignition switch.