Computer working but back light doesn't

I have a previous post indicating that the MacBook might be not recovering from "sleep", but I can now see that everything is working and the screen is not lit. What makes the screen light up? I don/t think there is anything else wrong.

Hi, DenMo
before going any further, it might be good to make sure that the brightness of your screen is not turned down to zero. first, i would try with the screen buttons on the keyboard, (top row, left side, 2nd from left is for lowering intensity, 3rd from left is to increase intensity).
If this does not work: can you connect your MB to another Mac, so that you could see what is going on?
hope this helps - please report back
Thomas

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