repair ID number

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Why can't you start your Mac? What happens when you try?

See if anything here helps.

Mac doesn't turn on or start up

Startup Issues - Resolve (2)

Startup Issues - Resolve (3)

If you live near an Apple Store, make a Genius Bar appointment to have the device/computer tested. Supposedly there is no charge for testing. Use 2nd link if not near an Apple Store or aren’t in the US. Take the original purchase receipt with you. Hardware Repair - Keeping Confidential Data Safe

Genius Bar Reservation US.    

Authorized Service Provider.