I have a Sony DSC-F88

Question

I have a Sony DSC-F88 5.1MP camera... When you switch it on to any of the program modes - image dispalyed on LCD and photographed is distorted. Image is skewed with the edges of the image flaring with three colours to the edge. A kind of focus shift..low resolution image - sort of semi solarised picture. Any previous picture taken displays normal on the LCD... I have tried other memory sticks.. no change..