Just received the Yi 4k in the mail. I opened it up, inserted the battery, and powered it up. Worked fine. I then powered off the camera, took my Transcend 633x U-3 micro SD card (one of the ones Yi recommends), and inserted it into the camera. Hit the power button, and now nothing will happen. I've tried removing the battery and the SD card several times. I've even tried putting in a Sandisk that I bought for another camera. The red light does go on when I plug the camera in. Is there some way to reset the camera? What do you guys suggest? I am very unhappy. This was pretty much my one shot for getting an action camera for my vacation in a couple of weeks, if I send it back now I probably won't get a new one until after I get back, and I don't trust this brand anymore... As of writing this I have it charging to see if maybe this will help somehow.