The first suspect is the battery.
It may just need charging.. try that.
You may have inadvertently set something that is causing the problem.
Reset the camera to factory settings.
See page 38 of the Camera User Guide.
..
When I press the shutter release the flash will pop up but the camera will not take apicture

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic