My Apple Watch won't power on
MY Apple Watch has a black screen. Holding power button does nothing. Screen remains black when on charger.
Apple Watch 38mm, iOS 9.3.1
Hi
Try charging your watch for 2.5 hours, taking care to follow the instructions here:
Check your battery and charge your Apple Watch - Apple Support
If the issue persists, next follow the steps here:
If your Apple Watch doesn't respond or won't turn on - Apple Support
If your watch still does not turn on, contact Apple Support (mail-in service may be available) or make a Genius Bar reservation with a view to having it checked under warranty: