6 Replies Latest reply on Oct 8, 2018 5:37 PM by Intel Corporation

    AC-9260: The miniport has failed a power transition to operational power


      HP AY168SA, stock configuration with replacement wifi card & clean install of Windows 10


      Using the latest Intel PRO set drivers (March 20).

      Using latest HP BIOS & drivers.


      With secure boot turned on, the error is very inconsistent and the event log shows a variety of obscure error messages.


      With secure boot turned off, the card fails to initialise with "The miniport has failed a power transition to operational power" (followed by a variety of assorted error messages) after the machine has been in stand by. restarting the machine brings the card back online. Uninstalling and reinstalling the card, or disabling it, causes the machine to hard reset.