Hi
First, please try this: Remove the battery pack from the camera and close the battery compartment. Now Press and hold down the power button for 5 seconds. Replace the battery pack and turn the camera on.
If your camera works normally, you're ready to start shooting. If the issue persists, your camera will require service to resolve this issue. You can setup the repair online right here: http://bit.ly/CanonRepairs
We hope that helps!
If you have any other questions, please feel free to contact us!
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