Asrock X58 Extreme motherboard system w/Win 7 64 has been intermittently loosing USB functionality on things like thumb drives, camera, and USB printer for some time. The mouse and keyboard always work though. More recently, the problem has become more persistent and rebooting doesn't clear it up. When the issue occurs window's knows there is a USB device there, only it doesn't function. Windows says there is a problem with the USB hub, but reinstalling the driver does no good (system says the proper driver is already installed). Since the problem has been intermittent until recently, wouldn't that suggest a hardware based failure? Have a spare hard drive so maybe a fresh OS install to test if the hardware is properly functioning? What do you guys think?