When taking pictures outside the view screen after

let me see if i understand. if you llok at the screen it looks ok, but after you take the picture it will record only a white bright image.....

in some cases you can easily fix this by goining into your camera option and restoring default settings. it is the exposure setting .

if you camera still giving you just black white images the light sensor in the machine ahs gone bad, it needs to be replace.