MacBook Pro won’t start. Resetting the SMC doesn’t work
My MacBook Pro won’t start. Have tried resetting the SMC but power button not responding
MacBook Pro 13″, OS X 10.11
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Make sure you look over this article:
If your Mac doesn't turn on - Apple Support
But based on what you have told me, it sounds like it will need service:
Contact Apple for support and service - Apple Support
Good luck!