FRUSTRATION about iPhone picture transferring to Windows

I'm really stressed out about this, because my iPhone's so full of pictures that my phone is starting to just not work anymore, maybe due to the memory. Voicemails get chopped up, I don't even receive some calls or text messages, CONSTANT crashing of Safari and other apps. Ugh!

Anyway I tried plugging in the 4S with the USB but there's no "pop up" prompting me to import or open like a camera folder. My iPhone doesn't even show up as a USB device under My Computer. After accessing Control Panel I can see the Apple USB as an Unspecified device but right clicking for options leaves nothing once again. I changed the Auto Play (like it says on the Apple website) to "import pictures and videos using Windows" but it doesn't even pop up! I have turned off and on my iPhone, cleared junk off my computer (still has plenty of free storage), cleared junk off my iPhone… Nothing works.

My PC is Windows 7, HP Pavilion. I set my iTunes to not automatically sync because it kept messing me up. Please NO suggestions of third party software downloading. I just want to be able to copy all the pictures safely to the My Pictures folder WITHOUT missing any of them in the process. I have 16, 000+ pictures after coming back from vacation, and the reason why there's so much is because I couldn't find out a way to transfer the pictures earlier and now I'm starting to lose data in my Notes and other places on my Phone, extremely frustrating glitches and losing my bookmarks and history in Safari…

I HAVE been successful before transferring some photos but once copied, the photos wouldn't delete on my iPhone. There's no way I can manually delete all 16, 000+ by hand once the photos are transferred. And I know I have done it before but it was a long time ago and I can't seem to make it work again. Help!

Sorry if I sounded like I was ranting, I'm receiving job interviews and other important news around this time and this is a huge inconvenience.

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