MacBook pro

JTmacbook Said:

"MacBook pro: My MacBook Pro wont turn on. It is fully charged and I have tried holding down the power button for 10secs and still nothing. After several attempts, it turns on for like a few seconds and goes again"

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Troubleshooting Mac Power:

I. Troubleshooting Mac Beep:

Replace the charging cable that goes to the charging block. That should fix the beep. See here: why does my macbook pro beep when charging - Apple Community

and...

II. Troublehooting Mac Charging:

A. Black Mac Screen:

Go Here: If your Mac doesn't Turn On or Start Up - Apple Support

Using External Devices: Try Resetting the SMC and NVRAM, but this time, using an external keyboard. Connect an external monitor and see if you get an output.

B. Mac Power Issues:

Try a New Charger:

If it is currently charging from a charger, then use a new charger:

• Power & Cables - Mac Accessories - Apple - Select "Mac Compatibility" on the left
• Find the right power adapter and cable for your Mac notebook - Apple Support

C. A Few Links to Refer to Power:

• If your Mac doesn't Turn On - Apple Support

• How to Turn your Mac On or Off - Apple Support

• About Mac Notebook Batteries - Apple Support

• Charge the MacBook Pro Battery - Apple Support

• If your Mac Battery won't Charge - Apple Support