Instructions
Deleting Via Computer
Insert your memory card into your computer's card reader or into an external card reader connected to your computer. Allow the photos to download to your computer as normal.
Click "My computer," and select the icon that represents the memory card that is inserted into the card reader.
Click on one of the pictures inside the folder. Press and hold the "CTRL" key on your computer's keyboard and at the same time press the letter "A." This will select all of the pictures inside the folder.
Press the "Delete" button on your keyboard. All the images on the card will be deleted and your card will be ready to be used once again.
Reformatting Memory Card
Insert the memory card into your camera after you have downloaded the pictures to your computer but have not deleted them off the card.
Press the "Menu" button on the back of your camera. Scroll through the menu selections and select "Format."
Click "Format card" from your camera's menu. The camera's LCD screen will present a decision box asking you to confirm that you want to erase all the pictures on the card. Press the "OK/Yes" button. Your camera will reformat the card, removing all previous pictures and preparing the card to be used again.