I can turn my macbook on, but the screen shows nothing!!!

I closed my laptop yesterday night, without shutting it down, and every thing was OK.
Today, i opened it, and nothing shows up, i thought the battery is empty so i plugged it to the power, also, nothing shows up.
I removed the battery and re plugged it, tried to turn it on, then i heard the CD ROM working as usually, and nothing appears on scree.
Is it a technical problem with no reason, or what!
I have to solve it soon.

See if this Discussion offers any insight...
https://discussions.apple.com/message/15193343#15193343

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