Please note that: 1. You can not use the Flash when the Camera is set to Burst or Multi Burst mode. 2. You can not use the Flash when the ISO or Twilight mode is selected in the Scene Selection. 3. You can not use the Flash when mode dial is set to Movie. 4. Ensure that the battery is fully charged and the flash is turned ON. Please set the Landscape mode or Snow mode or Beach mode in the Scene Selection and check if the flash is working. 5. Try initializing the Camera and check if it works normally. NOTE: Initializing the Camera will reset the settings of the Camera to the factory settings including date and time. It will not delete any data saved in the Camera. 6. Please press the Menu button on the Camera. Then, select the SETUP menu and select the SETUP 1 option of the Camera. Then, select the Initialize option to OK. 7. Try to power reset the Camera and check if it helps to resolve the issue. I suggest that you reset the Camera by removing the battery from the Camera and inserting it after 1 minute. 8. If the issue still persists then the Camera requires service. Good Luck!!!!!!!