Check the following:
- Make sure the battery has power, the battery cover is closed, and the camera is turned on. Also make sure the Mode dial is turned completely to the desired mode.
- Make sure your memory card is correctly installed in the camera or it can’t store any photos you take.
- Make sure the Mode dial is not set to playback or SETUP.
- Check the number in the lower left corner of the LCD screen. If the number is 0, the memory card is full. Transfer the photos to a computer and delete them from the memory card.