My mac cuts out and won't turn on

My macbook stopped working, cant switch it back on. I have plugged it in the green light flashes then stops, still cant switch it on.
help...

Hey,
First thing to try would be to reset the SMC on your machine (http://support.apple.com/kb/ht3964).
Does the sleep indicator on the front of the machine come on at all?
-Dib

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