I'm using a dell 7447 with newest BIOS A07 and Win 8.1 Home lastest update.
The problem is it can't shut down completely ( black screen, led's keyboard on and fan run at full speed) when I uncheck "turn on fast starup" ( I don't want to use fast starup, it make my computer lag sometimes).
Plz help 😞
Solved! Go to Solution.