Macbook Pro Wont turn on!!

description:

2011 mbp (internal battery). purchased month or again.

problem:

i unplugged usb , thunderbolt cables macbook pro in clamshell mode connected 2x external screens (running windows 7 @ time). opened mbp , wouldn't wake, light pulsing bottom right nothing.
turned off power , went start again , wont turn on now.
have tried 2x resets smc , pram still nothing. held down power 30secs, nothing.

ideas or cause or solution before speaking apple?

 

have tried of these steps?

mac doesn't boot

resolve startup issues , perform disk maintenance disk utility , fsck

troubleshooting: computer won't turn on

a flashing question mark appears when start mac​

 

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