Lmbg, what kind of device are you trying to plug under the USB3.0?
Can you try a USB 2.0?
Can you try to roll back to the previous BIOS version 0023? https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=23563&lang=eng&OSVersion=%0A%09%09%09%09%09%09%09%09%0A%09%09%09%09%09%09%09&DownloadType=BIOS