my watch keeps flashing apple logo

Try force restarting your watch: press and hold down both buttons for at least 10 seconds, until you see the Apple logo.

Be sure to allow a few minutes for your Apple Watch to start.

If your watch still does not start, contact Apple Support (mail-in service may be available), make a Genius Bar reservation or visit an Apple Authorized Service Provider to arrange for your watch to be serviced:

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