If your Bitspower Sedna O11D Lite-F water pump for the LIAN LI O11 DYNAMIC series has stopped working, first check for power supply issues, loose connections, or possible clogs in the cooling loop. Just like solving a puzzle game, troubleshooting requires a step-by-step approach—testing the pump separately, ensuring the reservoir has enough coolant, and inspecting for air bubbles that might cause failure. If the issue persists, consider resetting the system or replacing the pump to maintain optimal cooling performance.