My casio is acting up

Well I've had my casio z750 for about 2 years now and it is an awesome camera. Just recently it's been giving me some trouble every now and then by suddenly going black when I try to adjust the lens. After it goes black, a message pops up saying "lens problem" and then I have to turn it off and on to get it to work properly again. Is mine on the verge of breaking down completely or can it be a less severe problem?