MacBook is not even connected to the power line.

My new MacBook was working properly until yesterday. Today, it took a lot of time to get and display something on the screen. Now it does not start (no display screen or sound) even when connected to the electric network.

TRED was no case as a fall or similar.

Any ideas of what it may have caused? How to proceed?

Take a lHave you already tried the steps proposed by Apple?

If your Mac will not turn on - Apple Support

Try to start:

-Stop your Mac

-Wait until your computer turns off and after that press the power button

-Just after you hear the startup tone, press in and hold the SHIFT key

-Release the SHIFT key when you see a gray Apple sign and the progress under this sign bar

-Once your Mac boot, restart dhcpd as you usually do.

Apart from this, take a look at this article from Apple and follow the instructions to reset NVRAM shown here:How to reset the NVRAM on your Mac - Apple Support

Try resetting the system management controller: https://support.apple.com/en-us/HT201295

I hope this helps!

Tags: Notebooks

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