My crazy story and soultion in case anyone has the same circumstances. Skip down to bold if you don't want to read it all.
I have spent 3 days and probably 15 hours (no joke) trying to fix the issue of my computer (PC) not "seeing" my iPhone 5 OR iPad 4. I went through every troubleshoot, every forum, all the solutions that worked for everyone else, nothing worked. No matter what I tried, I could not get the iPhone or iPad to show under "devices" and I presume it is because the apple mobile device drivers were not installed. I did a COMPLETE removal and re-install of iTunes 5 times because that is the only way to obtain the drivers as far as I could tell, but the drivers NEVER installed.
I went to an Apple store today and was told by an apple genius "you have done everything I would do, We can not help you - the only solution, buy a new computer!"
Of course on the checklist was faulty USB cables. But that was highly unlikely because one was new and one almost new. And then that cause was ruled out because they both work perfectly in charging both my iPad and iPhone. The apple genius said, if they work to charge the devices, the USB cables are not faulty, it's your computer.
Solution for me: Well if you are at your wits end, don't rule out faulty USB cables EVEN IF THEY WORK TO CHARGE USING A CHARGER. After 3 days and 15 hours, I tried a third USB cable and Windows immediately said "installing drivers", and it works.
I hope this helps one person because I was losing my mind.
BTW, the Apple genius said "why do you want to connect your iPad to your computer anyway?" Was that a serious question?!?