Everything was fine until my Apple Watch turned off before I could finish putting in my security code. This happened several times in a row. I tried again several minutes later and it did work. Then I could not use my passbook to buy coffee. Just would not open. Finally, I click the crown to bring up the apps and I try clicking my Activity app and all of the apps start shaking then the whole app swarm flies off to the upper right hand side of the screen. I try it again and the same thing happens. Sometimes, I tap an app and the screen goes black and I am taken back to the time screen (home screen). Now I am also raising my wrist and the watch face comes on for a second and then goes black. Has this happened to anyone else? Can I fix it myself or must I go into the Apple Store and let them fix it? I am a very heavy user of the watch and really have found it to be great. THIS JUST IN FROM THE SELF HELP DESK: I gave it a hard reboot and it seems to be working again. How this is done? So easy, even a Level 3 could do it: press and hold the crown and the button on the side of the watch until the Apple logo appears. It will come back on and mine was good as new.