Hello Jzczan,
Typically, if the camera is not able to focus (when using autofocus), it will not release the shutter to take a picture. These cameras do operate with a 2-step shutter process where you press the shutter button half-way to focus and once focus is achieved, you continue to press the shutter button in completely to take the shot.
Let's start by resetting the camera to factory default settings. In order to access all menu items, make sure that you set the camera to one of the Creative modes such as, P, Av, Tv, or M. I would suggest setting the camera to the P mode. You will find [Reset All] in the wrench menu #4. Let's also test the camera with a different memory card or format the card that we have currently in the camera. The [Format] feature is in the yellow wrench menu #1.
When the card is formatted, all images and data on the card will be erased. Even protected images will be erased, so make sure there is nothing you need to keep. If necessary, transfer the images and data to a computer, etc., before formatting the card.
If the issue continues, then you may want to send the camera into our service center for evaluation. Please follow the link below to access our online repair portal to arrange for service:
https://mycanon.usa.canon.com/signin
If you already have a My Canon Account and your product is already registered, simply click on the “Get Repair Services” link on the left menu and follow the onscreen instructions to arrange for service for your product.
If you have a My Canon Account and your product is not registered, you must register your product first. Click on the “Get Repair Services” link on the left menu, then click on the “Register Product” link on the right. After your product is registered, click on the “Get Repair Service” link on the left menu and follow the onscreen instructions to arrange for service for your product.
If you do not have a My Canon Account, you will need to create one. After you create your account, click on the “Add Product” link to register your first product. After your product is registered, click on the “Get Repair Service” link on the left menu and follow the onscreen instructions to arrange for service for your product.
Once you have completed the repair request, you will have an opportunity to print a copy of the request for your records. This request form will also contain shipping instructions and an address label that you will attach to the outside of your shipping box when mailing your equipment for repair.
When shipping your camera, please be sure to remove the memory card and batteries. You are not required to send any accessories or manuals when shipping the camera. Be sure to include your name, street address (no P.O. boxes, please), telephone number, email address, and a letter describing the issue with the product.
