Okay, my crap-like computer

has USB 2.0 a total of 6 or 7 slots (two infront) and I added a wireless NIC which took forever to set up because i had to keep unistalling and reinstalling the drivers, well whatever anyways. Once I got it set up I downloaded all the updates for it because I had just bought it from a garage sale for $25 and im guessing it hadn't been updated since it was suposedly costom made 5 years ago. Before I had internet on it I used Two different thumb drives on it occasionally.(I used it for off-line games) but I think about ever scince then (im not for sure

) the ports have not been working. my sister's Zune gets power from the ports though, its just not recognizing anything I plug in. Plug and Play is not the problem. HELP!