If your Roku device will not turn on, the first thing to do is to make sure that the device is plugged in and that the power cord is seated properly. If you've done this and it still won't turn on, don't panic. You can consult the Roku XD troubleshooting page for more possible solutions.If your watch won't turn on, it may be because it's unable to charge. Here are some things you can do to fix the issue. 1. Check your watch's hardware Make sure you use the original chargi. 2. Turn on your watch while it's connected to the power adapter.