Problem Layar Redup atau Setting brightness di Lenovo z400 Sumber : http://blog.teksoporte.es/2015/11/lenovo-ideapad-z500-como-arreglar-el.html 1. Buka REGEDIT => Win + R lalu ketik regedit 2. buka path : "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968...