I just bought new camera SJ7 Star. I made a few minutes of recordings and then very problem appeared. After turning camera on, for 1 second on screen is displayed picture from lens and then screen goes blank, there is no picture on the screen, only backlight of screen is visible. If that happens, there is no way to turn camera off by power button - I need to remove battery. When camera is crashed like that, pushing buttons results in standard button sound, but nothing happens. After reinserting battery and powering camera again, this problem appears again. And that happens dozen times. One of dozen attempts to power on camera is successful, rest ends with blank screen and crash. I read that camera crashes often are caused by not supported SD cards, but SD card in my camera is Kingston microSDXC Class 10 64GB - this memory card I bought from official polish SJCAM distributor, so it must be supported. What can cause this problem? I need to send camera to distributor for warranty repair? I am attaching a photo when camera is freezed. Please help.