Macbook Pro won't turn on after clicking the power button.

I left my laptop on sleep mode yesterday night but when I tried to use it this morning the screen stayed black. I than turned it off and when I clicked the power button to turn it on again, only the fan turns on but the screen stays black. This occurred last time and the apple tech clicked some buttons and it turned on.

SMC Reset: 
http://support.apple.com/kb/HT3964

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    Portables that will not Power on.
    http://support.apple.com/kb/TS1365
    Go step by step.
    Note: Steps 5 and 6
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    http://support.apple.com/kb/HT3964
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    "Resetting SMC on portables with a battery you should not remove on your own".
    When resetting SMC, hold the keys down for 20 seconds or more.
    Keep it charging for 2 hours or more.
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