If the built-in flash does not function, then the camera may be set to Auto and will only flash when taking pictures in poorly illuminated environments.
To set the camera to the Forced flash setting so it will flash regardless of the surrounding brightness, press the UP ARROW on the control button until a lightning bolt icon appears on the LCD screen.
If the Forced flash setting is already enabled and the flash is still not working, then the issue may be due to another camera setting. Even if the Forced flash setting is enabled, the flash will still not work in the following circumstances:
When shooting MPEG movies
When set to the Twilight mode
If an external flash is connected
If in the Burst or Multi Burst mode
Please touch the MENU option on the screen of the Camera.
Then, select the REC MODE under the MENU.
Then, select NORMAL under the REC MODE.
If you're not able to select the NORMAL under the REC MODE, try Initializing the Camera.
First, please touch the HOME on the LCD screen of the Camera.
Then, select the SETTINGS in the HOME menu.
Then, select the MAIN SETTINGS under the SETTINGS.
Then, select the Initialize under the MAIN SETTINGS.
If the issue still persists after performing the troubleshooting steps provided above service of the Camera is required.
It's required to physically examine the Camera to determine the exact issue at the service center.