All of my 8 USB ports are not working anymore. I do not know what is wrong with my pc. I've opend it up and checked everything out but nothing is out of place. My pc says that everything is running when I troubleshoot the drives. When I insert my jump drive it powers on but the computer does not detect it. Does anyone know what is wrong with my drives? I am running a Windows 2000 NT. Please reply if you know anything that could help me. Thanks.