I just installed Boot Camp with Windows 7 (x64) on my MacBook Pro 13" Mid 2012 laptop for gaming purposes and I have had the problem of my USB ports not recognizing my devices. I have searched all over for a solution and I have had a no such luck. My friend who has almost the same exact laptop does no have a problem with his ports at all. I don't know if there was driver missing when I installed the support software or not.
By the way, I am trying to connect a wireless Logitech M510 mouse that uses a uniifying reciever, not bluetooth. I am wondering if I need to reinstall everything using just the mouse and turning off the trackpad. Thanks!