My computer is a Dell Ultrabook 14z 5423
OS: Windows 8.
I had a blue screen with Driver_IRQL_NOT_LESS_OR_EQUAL.
In the Device Manager it appears: a warning sign for the USB-IF xHCI USB Host Controller in Device Manager
For reinstalling the driver, must I remove it first?, and also Where can I find that driver?
Go to Solution.
Problem fixed by installing this driver:
For people with a similar problem but with other laptops, Download the driver from Application > Intel WiDi Application, in the support page