DIRECT ANSWER
Press Shift+B for Battery/DC bus, then Ctrl+B for the AC generator on a larger ship, and Shift+E for the engines. If the cockpit controls still fight you, test with extra USB devices disconnected.
Recovery checklist
Stop after each step and watch for a powered display or engine response.
- Battery / DC bus on — Shift + B
- AC generator / bus on — Ctrl + B on large ships
- Engines on — Shift + E
- Throttle at neutral before startup
- Try the clickable cockpit control with the mouse
- Disconnect unused controllers and restart
- Check for duplicated engine or throttle bindings
Why the generator matters
The official procedure says the AC generator is unavailable on smaller craft but may be required on bigger ships to start the engine or supply the rudder system.