Apple Watch First Gen won't start

Hi

Try force restarting your watch: press and hold both the side button and Digital Crown for around 10 seconds, until you see the logo.

If that does not help, next try charging your watch for around 2 hours, making sure that you follow the charging instructions here:

Check your battery and charge your Apple Watch - Apple Support

After that time, if it has not already restarted automatically, remove it from the charger and:

• Try restarting it (by pressing and holding the side button until you see the Apple logo).
• If necessary, next try force restarting it again.

If the issue then persists, I suggest that you contact Apple Support (mail-in service may be available) or make a Genius Bar reservation with a view to having your watch checked and, if recommended by Apple, serviced (whether under warranty, if eligible, or via chargeable repair service):

• Contact - Official Apple Support
• https://twitter.com/applesupport
• http://www.apple.com/retail/geniusbar/

To check your warranty status (the serial number is on the back of your watch):

https://checkcoverage.apple.com

More information:

If your Apple Watch won't charge or it won't turn on - Apple Support