headphone problems. - Check and see your connectors to the motherboard are free from dirt or other stuff that could cause a problem. Check inside the connectors both the board and the header. Often the wires have small cuts where the metal of the case has worn them away. This causes problems. Check all of the cables and the connectors.
USB problems - install the latest Intel chipset drivers and the USB3 drivers from the motherboard support page.
To help us help you - please provide as much information about your system and the problem as possible.