I have the same issue. One month old camera. X-T2s have an electrical issue and I'm surprised Fuji hasn't found this and fixed it. Some of them simply seize up...it just happens. It's not overheating, grips, faulty SD cards, or batteries...it's just a reliability or quality control issue and once the store's return period expires you have to rely on the warranty repair and invariably Fuji will not be able to duplicate the error. This is my conclusion after spending hours of researching this online this evening. If you are one of the unlucky owners you just have to deal with the gremlins. It's very unfortunate and some of us have this happen on paid shoots when we need these cameras to power up and function properly. With so many people experiencing these freezes they really should address it. I love Fuji and for now will stick with it but I would not recommend these cameras yet for paid professional work. They might get there but still not ready for prime time I'm afraid. The small form factor, excellent user interface and advantages of EVF can't compensate for a dead camera, puzzled photographer and a frustrated client.