Depends on what version of windows you're running. My usb ports won't work without one of the service packs. I suggest you check the device manager for conflicts. Control panel>system>hardware>device manager. If you find any marks next to a device, uninstall it. Reinstall the latest service pack or security update for your windows operating system. Then reboot. Then try installing the usb driver from your motherboard cd. That should fix any usb problems.