Default Connect to windows

I just got the G3 last weekend and I'm really frustrated trying to connect it to my Win7 laptop. The phone charges but I don't get any sort of popup to mount the SD card so I can transfer files back and forth.

I have MTP enabled and I even went to the Windows website and installed the MTP drivers but I still can't get my computer to recognize it. Google searches have turned up nothing helpful. What am I missing?

EDIT: Never mind. I figured it out. Apparently my phone prefers one USB port over another.