Disconnect them from the mobo and restart the pc. If the yellow marks in device manager are gone, you know you're looking in the right place.
Did the case sockets appear to work when you had them connected?
Alienware 17 R4 2017 review
These brilliant Lego posters show just what children's imaginations are capable of
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Comment réinitialiser votre PC, ordinateur portable ou tablette Windows ?