Well guys, I found something out. I wanted to turn on my camera by camera cover and i pressed the lens a bit hard and camera WORKED! I was so happy so i tried to do a picture. I click the center button, i saw "Saving..." and camera turned off. Well i tried it once again, camera turned on and it happened again. I checked on recording video and video was recording without any problem. But everytime when i want to turn camera i have to press the lens. I think it's hardware problem :(