Well, the question is... everytime I plug in my ac adapter to my r4000, the screen becomes very dim, but when I unplugg it, it is bright just the way it was. Well, i constantly plug in my notebook to an ac adapter considering the fact that i bought it as a DTR(desktop replacement notebook). Can you tell me how to solve this problem? Oh and one more thing... Before, it was viceversa. The screen was very dim until I plugged it into an ac adapter, but I rather have it be dim when it is plugged in rather than it being dim while it is charging.