Copy and paste.

- Open up "My Computer" and dont exit the window- Plug in your Camera- Shortly after you plug it in, a new folder should pop up which contains all your camera info and everything- Now open up "My pictures" on a sperate window- Press "Ctrl + A" to select every photo in a folder- Once its highlighted, press "Ctrl + C" , that should copy all your photos- Next, go back to your Camera's folder and find the section that contains all your photos- Once you find it press "Ctrl + P", which pastes everything.