Reseting impossible on a PowerShot A720is

[BoingoLAst]

WHEN DOING THE RESET on the PowerShot A720is , IT SAYS Busy with an interdiction Hand? I first go in tools, and the option reset all,  then push on the FUNC-Set button , then arrow to the ok option and then click on the Func-Set button, by there the interdiction hand shows with the word Busy?? I need Help thank you

[John_]

Try removing the battery and hold the On switch in the On position for at least 30 seconds