Laptop screen will light up but it's black [Closed]

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Registration date
Saturday August 24, 2013
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Last seen
August 24, 2013
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Hello,
I left my lap top sitting open for a few hours and when I came back the screen was blank. I tried unplugging it and removing the battery and then holding down the power button for a minute. Then rebooting. It played me a nice little beeping tune and the screen flashed a few different colors and then it went right back to the blank screen. What next???