Camera reading when you turn it on

when we turn on the camera it says it is on movie only even when you change the setting it only brings on the video camera, it is a A350, and by the way I got this second hand, and it is not new. it will take movie but no pictures, or will it display anything it only shows the camera to do videos. could you tell me what the prob is and maybe how to fix it?? when we got it it needed a new lcd so we put one in and did not mess with any of the other parts of the camera, did I do something wrong to make it only shoot movies? Debra