If you have Instagram, then you know how to delete photos from your computer. But if you don’t have Instagram, then how can you delete photos from your computer? The first step is to open the Instagram app and sign in. Then, go to the “Photos” tab and click on the “Delete” button. Once you click on the “Delete” button, Instagram will ask for your confirmation. After you confirm deletion, Instagram will take away all of your photos from your computer.