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Question: My K850i wont turn back on at all. no keypad light or anything

My phone won't turn on. I have had the common problem where the key pad turns on and it vibrates but nothing shows up on the screen. I updated and fixed it and have had no trouble since. But that was around 2 years ago. Now it does nothing when i push the power button. I was taking some pictures and after one of the pictures the screen went black. The phone was still on and the back light for the LCD was still lit. it appeared to freeze when it was saving the picture. I removed the battery and put it back in. Now i get nothing. The camera lends is stuck open. Does anyone know what it could be? I know this phone is pretty old but i'm happy wit it :)

Thanks all!