Apple Watch won't turn on
My Apple Watch will not turn on even when I try to charge it! Stays completely black
Apple Watch Series 1, watchOS 5
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Best reply
If your screen is blank or you see the Apple Magnetic Charging Cable icon and a red lightning bolt 
on the screen, charge your watch for up to 30 minutes. For more info, see:
If your Apple Watch won't charge or it won't turn on - Apple Support
If you still need help, contact Apple Support.
