回答“won't turn on even though battery charged”I don't know if anyone still posts on here or reads this, but I am having the same issue but with a Canon 7D. The battery is fully charged but the camera does not turn on AT ALL. There is absolutely NO POWER! None, nothing, nada. I tried many of the things on this thread, but none of them have worked so far. I really cannot afford to send the camera in to Canon, and if I take it to a camera shop, they are just going to send it to Canon.