If your Apple Watch won't turn on, there are some troubleshooting steps you can take to fix the problem.
Possible reasons for the issue include drained battery, faulty charger, or software bug.
To fix the problem, try connecting your Apple Watch to its charger and wait for a few minutes. Check charging accessories for damage and clean the back of the watch. Try a forced restart if it's a software issue. If the problem persists, there might be a hardware issue.
Contact Apple support for further assistance if there is no physical damage visible.