![](http://1.bp.blogspot.com/-pdTl4hbNVCw/UAraP_jZVpI/AAAAAAAAFdQ/tyJXCCHlVFg/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B02.png)
Ni à partir du Bureau, si vous appuyez sur ALT F4
![](http://2.bp.blogspot.com/-JwVlhqHQcJk/UAraNLF90wI/AAAAAAAAFdE/jPso9jA4E6M/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B01.png)
Pour activer la mise en veille prolongée du bouton d'alimentation :
A partir du Metro, tapez Panneau de configuration, puis cliquez sur Panneau de configuration affiché à gauche
![](http://1.bp.blogspot.com/-Td-f0G85TlY/UAraJ4zxWHI/AAAAAAAAFc4/Gs2JWq0b26c/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B03.png)
Cliquez sur Matériel et audio
![](http://3.bp.blogspot.com/-GLg5s7KBWTI/UAraHIIKFXI/AAAAAAAAFcs/sTptN1BEgU4/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B04.png)
Puis sur Options d'alimentation
![](http://2.bp.blogspot.com/-w0MJgHGkO9s/UAraDrQzFiI/AAAAAAAAFcg/Eyfnhprkh38/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B05.png)
Cliquez sur Choisir l'action de boutons d'alimentation
![](http://4.bp.blogspot.com/-kcz53ISA_m8/UArZ_75cYNI/AAAAAAAAFcU/_iM-IibqI8s/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B06.png)
Cliquez sur Modifier des paramètres actuellement non disponibles
![](http://2.bp.blogspot.com/-hUruLOQHz3A/UArZ8mFD5kI/AAAAAAAAFcI/zEWOi3TEx4E/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B07.png)
Dans paramètres d'arrêt, remarquez que la veille prolongée est non sélectionnée
![](http://2.bp.blogspot.com/-EB7ENbfgQcI/UArZ5qDvwOI/AAAAAAAAFb8/3748eUa3baY/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B08.png)
Sélectionnez l'option Veille prolongée, et cliquez sur le bouton Enregistrer les modifications
![](http://4.bp.blogspot.com/-5q-VQeDZ3p4/UArZ2L7Xg8I/AAAAAAAAFbw/eckGrFUW0Xw/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B09.png)
L'option Veille prolongée est disponible sur vous appuyez sur ALT + F4 à partir du Bureau
![](http://2.bp.blogspot.com/-2OmUab4KWaQ/UArZyYUYqfI/AAAAAAAAFbk/x-xb3IxL__g/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B10.png)
Et si vous cliquez sur le bouton Marche/Arrêt à partir de l'interface Metro
![](http://3.bp.blogspot.com/-3kQXnnadwjQ/UArZsF26upI/AAAAAAAAFbY/opp0u9OPUc0/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B11.png)
Vous pouvez mettre en veille prolongée votre système
![](http://1.bp.blogspot.com/-h-C0LQLYnFk/UArZoKksVwI/AAAAAAAAFbM/WIbjJRopK0s/s320/Activer%2Bla%2B%2Bmise%2Ben%2Bveille%2Bprolong%25C3%25A9e%2Bdu%2Bbouton%2Bd%2527alimentation%2Bsous%2BWindows%2B8%2B-%2B12.png)