My MacBook suddenly shut down and won't turn back on - how do I get it to turn back on?

My MacBook suddenly shut down after freezing up and I cannot get it to turn back on again.  I tried the suggestions in the manual and none of them worked to turn it back on. Is there something I am not doing correctly?  The little green light on the charger connector is green but not as bright as normal, it was charged by over 70% before it shut down, so I do not think it is a battery problem.  Is there anything I can do to turn it back on?  Thank you for any help given, I really appreciate it.

If it won't bong, then try an SMC reset.
http://support.apple.com/kb/HT3964
Can you boot in Safe Mode?
http://support.apple.com/kb/HT1564
Did you uninstall it this way?
http://www.microsoft.com/getsilverlight/get-started/install/removing-silverlight -mac.aspx

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