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How do I reset the SMC and PRAM without starting up

My MacBook Pro won't power up.How can I reset my SMC and PRAM without being able to start up?

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To reset the SMC:

Shut down the computer.

Disconnect the MagSafe power adapter from the computer, if it's connected.

Remove the battery.

Press and hold the power button for 5 seconds.

Release the power button.

Reconnect the battery and MagSafe power adapter.

Press the power button to turn on the computer.

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thnx! worked in 1 time!

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