Having trouble downloading photo's from Iphone 6 to PC windows 7

With my previous Iphone's I would simply connect the phone to my PC via usb and search the photo's in the phones hard drive .. copy and paste to the PC. With my new Iphone 6.. it only shows 75 of 640 pics and the rest show as an icon stating " local device " The same is true for my parnters Iphone 6.. both bought at the same time. . and the same is true using different PC's.. Any suggestions ? Windows prompts to download the photos but again only downloads 75 of 640 pics... I find it ironic how the latest phone will not work with my PC.. HELP!