My Apple Watch went black and will not turn on. Nothing happened to it, like any kind of trauma or anything. This has been happening a lot. Normally it comes back on after a day or 2 on the charger but this time it’s not. It’s only 2 years old. It needed a charge when it went black but it’s been on the charger for a while. We have tried the hard reset and it does nothing. Help!! It shouldn’t be doing this.