Intel WiUSB / USB xHCI conflict (Exclamation mark) in Device Manager
A yellow exclamation mark may be visible under "Intel WiUSB" for "USB-IF xHCI USB Host Controller" in the Device Manager.
The problem can be resolved by applying one of below solutions.
- 1. (Preferred method) - Run the latest available updates from VAIO Update .
- 2. Download the standalone updated driver directly from Intel: http://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22016.