I can't get my iPhone to download any of my pictures onto my PC. How can I fix this?

I have Windows 8.1 and I tried to go into the Control Panel -> Scanners and cameras and so on, but I couldn't see where to fix it in properties. The suggestion wasn't there. I really don't want to email them to myself.

Plug the phone in using a USB cable.
Go to File Explorer - if you can't find that, type "File Explorer" at the Start Menu.