Clavier et trackpad bloqués OSX

Bonjour,
Mon clavier et mon trackPad ne fonctionnent plus du tout.
Lorsque je branche ma souris en Bluetooth elle fonctionne, mais mon clavier et mon trackPad ne fonctionnent toujours pas.
J'ai consulté l'assistance en ligne (mon mac ets hors garantie) et j'ai esayé les mises à jours, cela ne fonctionne toujours pas.
J'ai fait changer le top case de mon macbook en fevrier 2011 dans un centre agrée Apple.
Pouvez vous m'aider SVP.
Merci par avance.
Cordialement,
Philippe

   Reset PRAM.   http://support.apple.com/kb/PH18761
Reset SMC.     http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
    Start up in Safe Mode.  http://support.apple.com/en-us/HT1564

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