My case is the stryker. Motherboard is ASUS rampage. Microcenter built this for me, and I just picked it up. All the USB 3.0 ports on the back motherboard seem to work fine. Even the 2 USB 2.0 ports at the front work. It is just those two 3.0 front ports. My OS is Win 8.1. Is there any kind of trouble shooting before I took the trouble of taking this giant rig into microcenter. It's just that I am in New York and I would have to pay a lot to cab it over. like 60 dollars... What could possibly be wrong with it?