My polaroid i633 digital camera has been working fine until about two weeks back, it just turned off without me pressing the "off button" and the lens is in the "out" poition, it will turn on but after a few seconds it will turn black but the little green light will still be on in the left corner, and it won't take any pictures...what can I do?....I have tried changing the batteries a multiple number of times but have no different results.