Day time photography

Could be a camera problem but it's possible that your hand or part of a straying finger may be covering the sensor on the front that tells the camera what the exposure is in full auto mode. You'll need to do some test shots making sure there's noting in the way. It could be that the sensor is failing, maybe put the camera into fully manual and take a shot a about 125th of a second at f16 on a bright, sunny day to see if the camera responds with a good image. A good source of information is the manufacturers web site, there may be a firmware download that could fix the problem. Good luck with it.