with the case still plugged in to the mains but the socket switched off the case will still be earthed. Make sure you place both hands on the case to discharge any static on them and you should be fine to plug the card in.
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 ?