[Windows 8] [8.1] IWD Bus Enumerator

Device Manager > System devices > IWD Bus Enumerator 有兩個
一個 ok, 另一個話
This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

Driver Interl Corporation 2014-10-04  5.5.55.0

冇得update,已是最新.冇事嗰個都係用呢個driver.

乜嘢事呢?  點fix呢?